Vulnerability-Lookup

RHSA-2022:8062

Vulnerability from csaf_opensuse - Published: 2022-11-15 00:00 - Updated: 2026-09-20 11:24

Summary

security update for unbound

Severity

Moderate

Notes

Title of the patch: security update for unbound

Description of the patch: This security update provides a functional equivalent of RHSA-2022:8062. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2022:8062.

Patchnames: RHSA-2022:8062

CVE-2022-30698

5.6 (Medium)


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

Affected products

Recommended 6 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 9:python3-unbound-0:1.16.2-2.el9.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:unbound-0:1.16.2-2.el9.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:unbound-devel-0:1.16.2-2.el9.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:unbound-devel-0:1.16.2-2.el9.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:unbound-libs-0:1.16.2-2.el9.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:unbound-libs-0:1.16.2-2.el9.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2022-30699

5.6 (Medium)


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

Affected products

Recommended 6 products, the same list as for CVE-2022-30698

Threats

Impact moderate

References

10 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://www.suse.com/security/cve/CVE-2022-30698/	self
https://www.suse.com/security/cve/CVE-2022-30699/	self
https://www.suse.com/security/cve/CVE-2022-30698	external
https://bugzilla.suse.com/1202031	external
https://bugzilla.suse.com/1202033	external
https://www.suse.com/security/cve/CVE-2022-30699	external
https://bugzilla.suse.com/1202031	external
https://bugzilla.suse.com/1202033	external

JSON

To clipboard

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}

CVE-2022-30698 (GCVE-0-2022-30698)

Vulnerability from cvelistv5 – Published: 2022-08-01 14:13 – Updated: 2024-09-16 19:35

Title

Novel "ghost domain names" attack by introducing subdomain delegations

Summary

NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a subdomain of a rogue domain name. The rogue nameserver returns delegation information for the subdomain that updates Unbound's delegation cache. This action can be repeated before expiry of the delegation information by querying Unbound for a second level subdomain which the rogue nameserver provides new delegation information. Since Unbound is a child-centric resolver, the ever-updating child delegation information can keep a rogue domain name resolvable long after revocation. From version 1.16.2 on, Unbound checks the validity of parent delegation records before using cached delegation information.

Severity

No CVSS data available.

CWE

Assigner

NLnet Labs Scorecard

References

5 references

URL	Tags
https://www.nlnetlabs.nl/downloads/unbound/CVE-20…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202212-02	vendor-advisory
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

Vendor	Product	Version
NLnet Labs	Unbound	Affected: unspecified , ≤ 1.16.1 (custom)

Date Public

2022-08-01 00:00

Credits

We would like to thank Xiang Li from the Network and Information Security Lab of Tsinghua University for discovering and disclosing the vulnerability.

Show details on NVD website

JSON

To clipboard

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          },
          {
            "name": "GLSA-202212-02",
            "tags": [
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            ],
            "url": "https://security.gentoo.org/glsa/202212-02"
          },
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              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Unbound",
          "vendor": "NLnet Labs",
          "versions": [
            {
              "lessThanOrEqual": "1.16.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
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          "lang": "en",
          "value": "We would like to thank Xiang Li from the Network and Information Security Lab of Tsinghua University for discovering and disclosing the vulnerability."
        }
      ],
      "datePublic": "2022-08-01T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the \"ghost domain names\" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a subdomain of a rogue domain name. The rogue nameserver returns delegation information for the subdomain that updates Unbound\u0027s delegation cache. This action can be repeated before expiry of the delegation information by querying Unbound for a second level subdomain which the rogue nameserver provides new delegation information. Since Unbound is a child-centric resolver, the ever-updating child delegation information can keep a rogue domain name resolvable long after revocation. From version 1.16.2 on, Unbound checks the validity of parent delegation records before using cached delegation information."
        }
      ],
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        "dateUpdated": "2023-03-29T00:00:00.000Z",
        "orgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6",
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        {
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        },
        {
          "name": "FEDORA-2022-f89beb0640",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/"
        },
        {
          "name": "FEDORA-2022-0a914d5c6b",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/"
        },
        {
          "name": "GLSA-202212-02",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202212-02"
        },
        {
          "name": "[debian-lts-announce] 20230329 [SECURITY] [DLA 3371-1] unbound security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html"
        }
      ],
      "title": "Novel \"ghost domain names\" attack by introducing subdomain delegations"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6",
    "assignerShortName": "NLnet Labs",
    "cveId": "CVE-2022-30698",
    "datePublished": "2022-08-01T14:13:44.911Z",
    "dateReserved": "2022-05-13T00:00:00.000Z",
    "dateUpdated": "2024-09-16T19:35:09.568Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2022-30699 (GCVE-0-2022-30699)

Vulnerability from cvelistv5 – Published: 2022-08-01 14:13 – Updated: 2024-09-16 18:29

Title

Novel "ghost domain names" attack by updating almost expired delegation information

Summary

NLnet Labs Unbound, up to and including version 1.16.1, is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten.

Severity

No CVSS data available.

CWE

Assigner

NLnet Labs Scorecard

References

5 references

URL	Tags
https://www.nlnetlabs.nl/downloads/unbound/CVE-20…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.gentoo.org/glsa/202212-02	vendor-advisory
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

1 product

Vendor	Product	Version
NLnet Labs	Unbound	Affected: unspecified , ≤ 1.16.1 (custom)

Date Public

2022-08-01 00:00

Credits

We would like to thank Xiang Li from the Network and Information Security Lab of Tsinghua University for discovering and disclosing the vulnerability.

Show details on NVD website

JSON

To clipboard

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        {
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      "title": "Novel \"ghost domain names\" attack by updating almost expired delegation information"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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.

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Action not permitted

RHSA-2022:8062

CVE-2022-30698 (GCVE-0-2022-30698)

CVE-2022-30699 (GCVE-0-2022-30699)

Tags

Sightings

Nomenclature

Related by attack behaviour