Vulnerability-Lookup

CVE-2021-3448 (GCVE-0-2021-3448)

Vulnerability from cvelistv5 – Published: 2021-04-08 22:06 – Updated: 2025-12-03 00:40

Summary

A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.

Severity

4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-03 00:40 UTC

CWE

CWE-358

Assigner

redhat redhat root

References

6 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1939368	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.gentoo.org/glsa/202105-20	vendor-advisoryx_refsource_GENTOO
https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	dnsmasq	Affected: dnsmasq 2.85

Show details on NVD website

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datos\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N\",\"baseScore\":4.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":1.4},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N\",\"baseScore\":4.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:P/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-358\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.85\",\"matchCriteriaId\":\"0E5A267E-B715-4488-ADF9-B29207854BDB\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4CFF558-3C47-480D-A2F0-BABF26042943\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"36D96259-24BD-44E2-96D9-78CE1D41F956\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A930E247-0B43-43CB-98FF-6CE7B8189835\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5D423B62-8EFE-4EFD-A986-5F5ECE5B892F\"}]}]}],\"references\":[{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1939368\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Exploit\",\"Issue 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    "redhat_vex": {
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      "current_release_date": "2025-12-03T02:28:15+00:00",
      "cve": "CVE-2021-3448",
      "id": "CVE-2021-3448",
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      "product_status:fixed": "21",
      "product_status:known_affected": "6",
      "product_status:known_not_affected": "5",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dnsmasq: fixed outgoing port used when --server is used with an interface name",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3448.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-26T02:32:15Z",
      "cve": "CVE-2021-3448",
      "id": "CVE-2021-3448",
      "initial_release_date": "2023-02-15T03:49:30Z",
      "product_status:known_affected": "2",
      "product_status:known_not_affected": "2",
      "product_status:recommended": "103",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-3448",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-3448.json",
      "version": "27"
    },
    "vulnrichment": {
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}

alsa-2021:4153

Vulnerability from osv_almalinux

Published

2021-11-09 08:24

Modified

2021-11-12 10:20

Summary

Moderate: dnsmasq security and bug fix update

Details

The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server.

Security Fix(es):

dnsmasq: fixed outgoing port used when --server is used with an interface name (CVE-2021-3448)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

References

URL

Type

https://vulners.com/cve/CVE-2021-3448

REPORT

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "dnsmasq"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.79-19.el8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "dnsmasq-utils"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.79-19.el8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server.\n\nSecurity Fix(es):\n\n* dnsmasq: fixed outgoing port used when --server is used with an interface name (CVE-2021-3448)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.",
  "id": "ALSA-2021:4153",
  "modified": "2021-11-12T10:20:56Z",
  "published": "2021-11-09T08:24:48Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2021-3448"
    }
  ],
  "related": [
    "CVE-2021-3448"
  ],
  "summary": "Moderate: dnsmasq security and bug fix update"
}

BDU:2022-04028

Vulnerability from fstec - Published: 08.04.2021

Title

Уязвимость DNS-сервера Dnsmasq, связанная с неправильно реализованной проверкой безопасности для стандартных элементов, позволяющая нарушителю реализовать атаку отравления кэша DNS

Description

Уязвимость DNS-сервера Dnsmasq связана с неправильно реализованной проверкой безопасности для стандартных элементов. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, реализовать атаку отравления кэша DNS

Severity


                    
                      AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Vendor

Red Hat, Inc., Fedora Project, АО «ИВК», Simon Kelley, Oracle Corp., ООО «РусБИТех-Астра», АО «НППКТ»

Software Name

Red Hat Enterprise Linux, Fedora, Альт 8 СП (запись в едином реестре российских программ №4305), Dnsmasq, Oracle Communications Cloud Native Core Network Function Cloud Native Environment, Astra Linux Special Edition (запись в едином реестре российских программ №369), ОСОН ОСнова Оnyx (запись в едином реестре российских программ №5913)

Software Version

6 (Red Hat Enterprise Linux), 7 (Red Hat Enterprise Linux), 8 (Red Hat Enterprise Linux), 32 (Fedora), 33 (Fedora), 34 (Fedora), - (Альт 8 СП), до 2.85 (Dnsmasq), 1.9.0 (Oracle Communications Cloud Native Core Network Function Cloud Native Environment), 4.7 (Astra Linux Special Edition), до 2.5.2 (ОСОН ОСнова Оnyx)

Possible Mitigations

Использование рекомендаций: Для dnsmasq: https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q2/014962.html Для Fedora: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/CVE-2021-3448 Для программных продуктов Oracle Corp.: https://www.oracle.com/security-alerts/cpujan2022.html Для Astra Linux Special Edition 4.7 (для архитектуры ARM): использование рекомендаций производителя: https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 Для ОСОН ОСнова Оnyx: Обновление программного обеспечения dnsmasq до версии 2.85-1 Для ОС Альт 8 СП: установка обновления из публичного репозитория программного средства

Reference

https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q2/014962.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ https://access.redhat.com/security/cve/CVE-2021-3448 https://www.oracle.com/security-alerts/cpujan2022.html https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 https://поддержка.нппкт.рф/bin/view/ОСнова/Обновления/2.5.2/ https://bugzilla.redhat.com/show_bug.cgi?id=1939368 https://altsp.su/obnovleniya-bezopasnosti/

CWE

CWE-358

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:H/Au:N/C:N/I:P/A:N",
  "CVSS 3.0": "AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Red Hat, Inc., Fedora Project, \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb, Simon Kelley, Oracle Corp., \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb, \u0410\u041e \u00ab\u041d\u041f\u041f\u041a\u0422\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "6 (Red Hat Enterprise Linux), 7 (Red Hat Enterprise Linux), 8 (Red Hat Enterprise Linux), 32 (Fedora), 33 (Fedora), 34 (Fedora), - (\u0410\u043b\u044c\u0442 8 \u0421\u041f), \u0434\u043e 2.85 (Dnsmasq), 1.9.0 (Oracle Communications Cloud Native Core Network Function Cloud Native Environment), 4.7 (Astra Linux Special Edition), \u0434\u043e 2.5.2 (\u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f dnsmasq:\nhttps://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q2/014962.html\n\n\u0414\u043b\u044f Fedora:\nhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/\nhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/\nhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/CVE-2021-3448\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Oracle Corp.:\nhttps://www.oracle.com/security-alerts/cpujan2022.html\n\n\u0414\u043b\u044f Astra Linux Special Edition 4.7 (\u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b ARM):\n\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47\n\n\u0414\u043b\u044f \u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx:\n\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f dnsmasq \u0434\u043e \u0432\u0435\u0440\u0441\u0438\u0438 2.85-1\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u043b\u044c\u0442 8 \u0421\u041f: \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u0433\u043e \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "08.04.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "16.09.2024",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "01.07.2022",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2022-04028",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-3448",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Red Hat Enterprise Linux, Fedora, \u0410\u043b\u044c\u0442 8 \u0421\u041f (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305), Dnsmasq, Oracle Communications Cloud Native Core Network Function Cloud Native Environment, Astra Linux Special Edition (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), \u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21165913)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Red Hat, Inc. Red Hat Enterprise Linux 6 , Red Hat, Inc. Red Hat Enterprise Linux 7 , Red Hat, Inc. Red Hat Enterprise Linux 8 , Fedora Project Fedora 32 , Fedora Project Fedora 33 , Fedora Project Fedora 34 , \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u043b\u044c\u0442 8 \u0421\u041f -  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305), \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 4.7 ARM (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), \u0410\u041e \u00ab\u041d\u041f\u041f\u041a\u0422\u00bb \u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx \u0434\u043e 2.5.2  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21165913)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Dnsmasq, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0434\u043b\u044f \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0430\u0442\u0430\u043a\u0443 \u043e\u0442\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u044d\u0448\u0430 DNS",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0434\u043b\u044f \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 (CWE-358)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Dnsmasq \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0434\u043b\u044f \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0430\u0442\u0430\u043a\u0443 \u043e\u0442\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u044d\u0448\u0430 DNS",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0417\u043b\u043e\u0443\u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u043e\u043c",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q2/014962.html\nhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/\nhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/\nhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/\nhttps://access.redhat.com/security/cve/CVE-2021-3448\nhttps://www.oracle.com/security-alerts/cpujan2022.html\nhttps://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47\nhttps://\u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430.\u043d\u043f\u043f\u043a\u0442.\u0440\u0444/bin/view/\u041e\u0421\u043d\u043e\u0432\u0430/\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f/2.5.2/\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1939368\nhttps://altsp.su/obnovleniya-bezopasnosti/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u0421\u0435\u0442\u0435\u0432\u043e\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0435 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u043e, \u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-358",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041d\u0438\u0437\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 2,6)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 4)"
}

cleanstart-2026-ky78316

Vulnerability from cleanstart

Published

2026-09-04 00:59

Modified

2026-09-03 10:27

Summary

dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-...

Details

Multiple security vulnerabilities affect the dnsmasq package. dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS. See references for individual vulnerability details.

Severity

9.8 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://github.com/cleanstart-dev/cleanstart-secu…	ADVISORY
	https://osv.dev/vulnerability/CVE-2017-13704	WEB
	https://osv.dev/vulnerability/CVE-2017-14491	WEB
	https://osv.dev/vulnerability/CVE-2017-14492	WEB
	https://osv.dev/vulnerability/CVE-2017-14493	WEB
	https://osv.dev/vulnerability/CVE-2017-14494	WEB
	https://osv.dev/vulnerability/CVE-2017-14495	WEB
	https://osv.dev/vulnerability/CVE-2017-14496	WEB
	https://osv.dev/vulnerability/CVE-2017-15107	WEB
	https://osv.dev/vulnerability/CVE-2019-14834	WEB
	https://osv.dev/vulnerability/CVE-2020-25681	WEB
	https://osv.dev/vulnerability/CVE-2020-25682	WEB
	https://osv.dev/vulnerability/CVE-2020-25683	WEB
	https://osv.dev/vulnerability/CVE-2020-25684	WEB
	https://osv.dev/vulnerability/CVE-2020-25685	WEB
	https://osv.dev/vulnerability/CVE-2020-25686	WEB
	https://osv.dev/vulnerability/CVE-2020-25687	WEB
	https://osv.dev/vulnerability/CVE-2021-3448	WEB
	https://osv.dev/vulnerability/CVE-2022-0934	WEB
	https://osv.dev/vulnerability/CVE-2023-28450	WEB
	https://osv.dev/vulnerability/CVE-2023-50387	WEB
	https://osv.dev/vulnerability/CVE-2023-50868	WEB
	https://osv.dev/vulnerability/CVE-2026-2291	WEB
	https://osv.dev/vulnerability/CVE-2026-4890	WEB
	https://osv.dev/vulnerability/CVE-2026-4891	WEB
	https://osv.dev/vulnerability/CVE-2026-4892	WEB
	https://osv.dev/vulnerability/CVE-2026-4893	WEB
	https://osv.dev/vulnerability/CVE-2026-5172	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-13704	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-14491	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-14492	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-14493	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-14494	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-14495	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-14496	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2017-15107	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2019-14834	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2020-25681	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2020-25682	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2020-25683	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2020-25684	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2020-25685	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2020-25686	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2020-25687	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2021-3448	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2022-0934	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2023-28450	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2023-50387	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2023-50868	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-2291	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-4890	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-4891	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-4892	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-4893	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-5172	WEB

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "dnsmasq"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.92_p2-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Multiple security vulnerabilities affect the dnsmasq package. dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS. See references for individual vulnerability details.",
  "id": "CLEANSTART-2026-KY78316",
  "modified": "2026-09-03T10:27:17Z",
  "published": "2026-09-04T00:59:50.930698Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-KY78316.json"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-13704"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-14491"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-14492"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-14493"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-14494"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-14495"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-14496"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2017-15107"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2019-14834"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2020-25681"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2020-25682"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2020-25683"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2020-25684"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2020-25685"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2020-25686"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2020-25687"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2021-3448"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2022-0934"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2023-28450"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2023-50387"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2023-50868"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-2291"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-4890"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-4891"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-4892"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-4893"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-5172"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-13704"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14491"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14492"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14493"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14494"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14495"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14496"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15107"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14834"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25681"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25682"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25683"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25684"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25685"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25686"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25687"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3448"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0934"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28450"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-50387"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-50868"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2291"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4890"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4891"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4892"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4893"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5172"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-...",
  "upstream": [
    "CVE-2017-13704",
    "CVE-2017-14491",
    "CVE-2017-14492",
    "CVE-2017-14493",
    "CVE-2017-14494",
    "CVE-2017-14495",
    "CVE-2017-14496",
    "CVE-2017-15107",
    "CVE-2019-14834",
    "CVE-2020-25681",
    "CVE-2020-25682",
    "CVE-2020-25683",
    "CVE-2020-25684",
    "CVE-2020-25685",
    "CVE-2020-25686",
    "CVE-2020-25687",
    "CVE-2021-3448",
    "CVE-2022-0934",
    "CVE-2023-28450",
    "CVE-2023-50387",
    "CVE-2023-50868",
    "CVE-2026-2291",
    "CVE-2026-4890",
    "CVE-2026-4891",
    "CVE-2026-4892",
    "CVE-2026-4893",
    "CVE-2026-5172"
  ]
}

FKIE_CVE-2021-3448

Vulnerability from fkie_nvd - Published: 2021-04-08 23:15 - Updated: 2026-06-17 04:05

Severity

4.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
4.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Summary

References

URL	Tags
secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=1939368	Exploit, Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
secalert@redhat.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
secalert@redhat.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
secalert@redhat.com	https://security.gentoo.org/glsa/202105-20	Third Party Advisory
secalert@redhat.com	https://www.oracle.com/security-alerts/cpujan2022.html	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://bugzilla.redhat.com/show_bug.cgi?id=1939368	Exploit, Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/202105-20	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.oracle.com/security-alerts/cpujan2022.html	Patch, Third Party Advisory

Impacted products

Vendor	Product	Version
thekelleys	dnsmasq	*
redhat	enterprise_linux	8.0
fedoraproject	fedora	32
fedoraproject	fedora	33
fedoraproject	fedora	34
oracle	communications_cloud_native_core_network_function_cloud_native_environment	1.9.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "dnsmasq",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "dnsmasq 2.85"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0E5A267E-B715-4488-ADF9-B29207854BDB",
              "versionEndExcluding": "2.85",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943",
              "vulnerable": true
            }
          ],
          "negate": false,
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GHSA-VVF4-C8P4-89V5

Vulnerability from github – Published: 2022-05-24 17:47 – Updated: 2025-12-03 03:31

Details

Severity

4.0 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

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  "affected": [],
  "aliases": [
    "CVE-2021-3448"
  ],
  "database_specific": {
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      "CWE-358"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-04-08T23:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.",
  "id": "GHSA-vvf4-c8p4-89v5",
  "modified": "2025-12-03T03:31:20Z",
  "published": "2022-05-24T17:47:02Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3448"
    },
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1939368"
    },
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}

GSD-2021-3448

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-3448

Aliases

CVE-2021-3448

JSON

To clipboard

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      "https://advisories.mageia.org/CVE-2021-3448.html",
      "https://security.archlinux.org/CVE-2021-3448",
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2022-10-27T12:45Z",
      "publishedDate": "2021-04-08T23:15Z"
    }
  }
}

MSRC_CVE-2021-3448

Vulnerability from csaf_microsoft - Published: 2021-04-02 00:00 - Updated: 2023-03-10 00:00

Summary

A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface dnsmasq uses a fixed port while forwarding queries. An attacker on the network able to find the outgoing port used by dnsmasq only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.

Scope

1 vulnerability in this advisory, including CVE-2021-3448.

CVE-2021-3448

4.0 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Fixed: 1 product Known affected: 1 product

https://learn.microsoft.com/en-us/azure/azure-linux/tutoria…

Open the full advisory

OPENSUSE-SU-2021:1426-1

Vulnerability from csaf_opensuse - Published: 2021-10-31 15:08 - Updated: 2021-10-31 15:08

Summary

Security update for dnsmasq

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2021-3448.

CVE-2021-3448

4 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Recommended: 4 products

Open the full advisory

OPENSUSE-SU-2021:3530-1

Vulnerability from csaf_opensuse - Published: 2021-10-27 07:24 - Updated: 2021-10-27 07:24

Summary

Security update for dnsmasq

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2021-3448.

CVE-2021-3448

4 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Recommended: 8 products

Open the full advisory

OPENSUSE-SU-2024:10721-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2024-06-15 00:00

Summary

dnsmasq-2.86-1.1 on GA media

Severity

Moderate

Scope

14 vulnerabilities in this advisory, including CVE-2021-3448.

CVE-2021-3448

4 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Recommended: 8 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-3448 (GCVE-0-2021-3448)

Vulnerability from osv_almalinux

Vulnerability from cleanstart

Tags

Sightings

Nomenclature

Related by attack behaviour