Vulnerability-Lookup

CVE-2018-16881 (GCVE-0-2018-16881)

Vulnerability from cvelistv5 – Published: 2019-01-25 18:00 – Updated: 2024-08-05 10:32

Summary

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash. Versions before 8.27.0 are vulnerable.

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-190

Assigner

redhat redhat root

References

6 references

URL	Tags
https://access.redhat.com/errata/RHSA-2019:2110	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2439	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2437	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHBA-2019:2501	vendor-advisoryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version	CPE status
The rsyslog Project	rsyslog:	Affected: 8.27.0	guessed

Date Public

2017-04-19 00:00

Show details on NVD website

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vulnerables.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV30\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"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-190\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-190\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"8.27.0\",\"matchCriteriaId\":\"09D6181E-8ED9-43C4-9393-FE7780EC919C\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:virtualization_manager:4.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9FA1A18F-D997-4121-A01B-FD9B3BF266CF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"33C068A4-3780-4EAB-A937-6082DF847564\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"566507B6-AC95-47F7-A3FB-C6F414E45F51\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1CDCFF34-6F1D-45A1-BE37-6A0E17B04801\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B4A684C7-88FD-43C4-9BDB-AE337FCBD0AB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"37CE1DC7-72C5-483C-8921-0B462C8284D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"51EF4996-72F4-4FA4-814F-F5991E7A8318\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"825ECE2D-E232-46E0-A047-074B34DB1E97\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6BBD7A51-0590-4DDF-8249-5AFA8D645CB6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BB28F9AF-3D06-4532-B397-96D7E4792503\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"142AD0DD-4CF3-4D74-9442-459CE3347E3A\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"}]}]}],\"references\":[{\"url\":\"https://access.redhat.com/errata/RHBA-2019:2501\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2019:2110\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2019:2437\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2019:2439\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Mitigation\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/05/msg00028.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHBA-2019:2501\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2019:2110\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2019:2437\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2019:2439\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Mitigation\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/05/msg00028.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:51:22+00:00",
      "cve": "CVE-2018-16881",
      "id": "CVE-2018-16881",
      "initial_release_date": "2018-01-01T00:00:00+00:00",
      "product_status:fixed": "168",
      "product_status:known_not_affected": "40",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "rsyslog: imptcp: integer overflow when Octet-Counted TCP Framing is enabled",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-16881.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-06-07T05:41:21Z",
      "cve": "CVE-2018-16881",
      "id": "CVE-2018-16881",
      "initial_release_date": "2023-02-15T04:23:51Z",
      "product_status:known_affected": "412",
      "product_status:known_not_affected": "107",
      "product_status:recommended": "104",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-16881",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-16881.json",
      "version": "26"
    }
  }
}

RHSA-2019:2110

Vulnerability from csaf_redhat - Published: 2019-08-06 12:11 - Updated: 2026-06-28 12:32

Summary

Red Hat Security Advisory: rsyslog security and bug fix update

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2018-16881.

CVE-2018-16881

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Fixed: 141 products

https://access.redhat.com/errata/RHSA-2019:2110

Open the full advisory

RHSA-2019:2437

Vulnerability from csaf_redhat - Published: 2019-08-12 11:56 - Updated: 2026-08-08 17:15

Summary

Red Hat Security Advisory: Red Hat Virtualization security update

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2018-16881.

CVE-2018-16881

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Fixed: 11 products

https://access.redhat.com/errata/RHSA-2019:2437

Open the full advisory

RHSA-2019:2439

Vulnerability from csaf_redhat - Published: 2019-08-12 11:53 - Updated: 2026-08-08 17:15

Summary

Red Hat Security Advisory: rhvm-appliance security, bug fix, and enhancement update

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2018-16881.

CVE-2018-16881

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Fixed: 4 products

https://access.redhat.com/errata/RHSA-2019:2439

Open the full advisory

RHSA-2019_2110

Vulnerability from csaf_redhat - Published: 2019-08-06 12:11 - Updated: 2024-11-15 00:44

Summary

Red Hat Security Advisory: rsyslog security and bug fix update

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2018-16881.

CVE-2018-16881

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Fixed: 592 products

https://access.redhat.com/errata/RHSA-2019:2110

Open the full advisory

RHSA-2019_2437

Vulnerability from csaf_redhat - Published: 2019-08-12 11:56 - Updated: 2024-11-15 04:09

Summary

Red Hat Security Advisory: Red Hat Virtualization security update

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2018-16881.

CVE-2018-16881

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Fixed: 11 products

https://access.redhat.com/errata/RHSA-2019:2437

Open the full advisory

RHSA-2019_2439

Vulnerability from csaf_redhat - Published: 2019-08-12 11:53 - Updated: 2024-11-15 05:16

Summary

Red Hat Security Advisory: rhvm-appliance security, bug fix, and enhancement update

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2018-16881.

CVE-2018-16881

A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Fixed: 4 products

https://access.redhat.com/errata/RHSA-2019:2439

Open the full advisory

SUSE-SU-2019:0209-1

Vulnerability from csaf_suse - Published: 2019-01-31 08:41 - Updated: 2019-01-31 08:41

Summary

Security update for rsyslog

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2018-16881.

CVE-2018-16881

7.5 (High)


                
                  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 162 products

Open the full advisory

ubuntu-cve-2018-16881

Vulnerability from osv_ubuntu

Published

2019-01-25 18:29

Modified

2025-10-24 04:47

Summary

Details

Severity

5.3 (Medium)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

7.5 (High)


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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2018-16881	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	REPORT
	https://github.com/rsyslog/rsyslog/commit/6c52f29…	REPORT
	https://ubuntu.com/security/notices/USN-5419-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2018-16881	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rsyslog",
            "binary_version": "7.4.4-1ubuntu2.7"
          },
          {
            "binary_name": "rsyslog-gnutls",
            "binary_version": "7.4.4-1ubuntu2.7"
          },
          {
            "binary_name": "rsyslog-gssapi",
            "binary_version": "7.4.4-1ubuntu2.7"
          },
          {
            "binary_name": "rsyslog-mysql",
            "binary_version": "7.4.4-1ubuntu2.7"
          },
          {
            "binary_name": "rsyslog-pgsql",
            "binary_version": "7.4.4-1ubuntu2.7"
          },
          {
            "binary_name": "rsyslog-relp",
            "binary_version": "7.4.4-1ubuntu2.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "rsyslog",
        "purl": "pkg:deb/ubuntu/rsyslog@7.4.4-1ubuntu2.7?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.8.11-2ubuntu4",
        "7.4.4-1ubuntu1",
        "7.4.4-1ubuntu2",
        "7.4.4-1ubuntu2.1",
        "7.4.4-1ubuntu2.3",
        "7.4.4-1ubuntu2.5",
        "7.4.4-1ubuntu2.6",
        "7.4.4-1ubuntu2.7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "rsyslog",
            "binary_version": "8.16.0-1ubuntu3.1+esm1"
          },
          {
            "binary_name": "rsyslog-elasticsearch",
            "binary_version": "8.16.0-1ubuntu3.1+esm1"
          },
          {
            "binary_name": "rsyslog-gnutls",
            "binary_version": "8.16.0-1ubuntu3.1+esm1"
          },
          {
            "binary_name": "rsyslog-gssapi",
            "binary_version": "8.16.0-1ubuntu3.1+esm1"
          },
          {
            "binary_name": "rsyslog-mysql",
            "binary_version": "8.16.0-1ubuntu3.1+esm1"
          },
          {
            "binary_name": "rsyslog-pgsql",
            "binary_version": "8.16.0-1ubuntu3.1+esm1"
          },
          {
            "binary_name": "rsyslog-relp",
            "binary_version": "8.16.0-1ubuntu3.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "rsyslog",
        "purl": "pkg:deb/ubuntu/rsyslog@8.16.0-1ubuntu3.1+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.16.0-1ubuntu3.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.12.0-1ubuntu2",
        "8.12.0-1ubuntu3",
        "8.14.0-2ubuntu1",
        "8.14.0-2ubuntu2",
        "8.16.0-1ubuntu1",
        "8.16.0-1ubuntu2",
        "8.16.0-1ubuntu3",
        "8.16.0-1ubuntu3.1"
      ]
    }
  ],
  "aliases": [],
  "details": "A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash. Versions before 8.27.0 are vulnerable.",
  "id": "UBUNTU-CVE-2018-16881",
  "modified": "2025-10-24T04:47:12Z",
  "published": "2019-01-25T18:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-16881"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/rsyslog/rsyslog/commit/6c52f29d593a27f934a1871d40eed84ebde3f3a6"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5419-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-16881"
    }
  ],
  "related": [
    "USN-5419-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-16881"
  ]
}

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.

Action not permitted

CVE-2018-16881 (GCVE-0-2018-16881)

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature