suse-su-2025:20118-1
Vulnerability from csaf_suse
Published
2025-02-03 09:22
Modified
2025-02-03 09:22
Summary
Security update for dnsmasq

Notes

Title of the patch
Security update for dnsmasq
Description of the patch
This update for dnsmasq fixes the following issues: - Update to 2.90: * CVE-2023-50387, CVE-2023-50868: Fixed a Denial Of Service while trying to validate specially crafted DNSSEC responses (bsc#1219823, bsc#1219826). * Fix reversion in --rev-server introduced in 2.88 which caused breakage if the prefix length is not exactly divisible by 8 (IPv4) or 4 (IPv6). * Fix possible SEGV when there server(s) for a particular domain are configured, but no server which is not qualified for a particular domain. * Set the default maximum DNS UDP packet sice to 1232. * Add --no-dhcpv4-interface and --no-dhcpv6-interface for better control over which interfaces are providing DHCP service. * Fix issue with stale caching * Add configurable caching for arbitrary RR-types. * Add --filter-rr option, to filter arbitrary RR-types. - SLP got dropped, remove config (bsc#1214884)
Patchnames
SUSE-SLE-Micro-6.0-185
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for dnsmasq",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for dnsmasq fixes the following issues:\n\n- Update to 2.90:\n\n  * CVE-2023-50387, CVE-2023-50868: Fixed a Denial Of Service while trying\n    to validate specially crafted DNSSEC responses (bsc#1219823, bsc#1219826).\n  * Fix reversion in --rev-server introduced in 2.88 which caused\n    breakage if the prefix length is not exactly divisible by 8\n    (IPv4) or 4 (IPv6).\n  * Fix possible SEGV when there server(s) for a particular domain\n    are configured, but no server which is not qualified for a\n    particular domain.\n  * Set the default maximum DNS UDP packet sice to 1232.\n  * Add --no-dhcpv4-interface and --no-dhcpv6-interface for better\n    control over which interfaces are providing DHCP service.\n  * Fix issue with stale caching\n  * Add configurable caching for arbitrary RR-types.\n  * Add --filter-rr option, to filter arbitrary RR-types.\n\n- SLP got dropped, remove config (bsc#1214884)\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-SLE-Micro-6.0-185",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_20118-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2025:20118-1",
        "url": "https://www.suse.com/support/update/announcement/2025/suse-su-202520118-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2025:20118-1",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2025-June/021209.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1214884",
        "url": "https://bugzilla.suse.com/1214884"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1219823",
        "url": "https://bugzilla.suse.com/1219823"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1219826",
        "url": "https://bugzilla.suse.com/1219826"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2023-28450 page",
        "url": "https://www.suse.com/security/cve/CVE-2023-28450/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2023-50387 page",
        "url": "https://www.suse.com/security/cve/CVE-2023-50387/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2023-50868 page",
        "url": "https://www.suse.com/security/cve/CVE-2023-50868/"
      }
    ],
    "title": "Security update for dnsmasq",
    "tracking": {
      "current_release_date": "2025-02-03T09:22:40Z",
      "generator": {
        "date": "2025-02-03T09:22:40Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2025:20118-1",
      "initial_release_date": "2025-02-03T09:22:40Z",
      "revision_history": [
        {
          "date": "2025-02-03T09:22:40Z",
          "number": "1",
          "summary": "Current version"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "dnsmasq-2.90-1.1.aarch64",
                "product": {
                  "name": "dnsmasq-2.90-1.1.aarch64",
                  "product_id": "dnsmasq-2.90-1.1.aarch64"
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "dnsmasq-2.90-1.1.s390x",
                "product": {
                  "name": "dnsmasq-2.90-1.1.s390x",
                  "product_id": "dnsmasq-2.90-1.1.s390x"
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "dnsmasq-2.90-1.1.x86_64",
                "product": {
                  "name": "dnsmasq-2.90-1.1.x86_64",
                  "product_id": "dnsmasq-2.90-1.1.x86_64"
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "SUSE Linux Micro 6.0",
                "product": {
                  "name": "SUSE Linux Micro 6.0",
                  "product_id": "SUSE Linux Micro 6.0",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sl-micro:6.0"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "dnsmasq-2.90-1.1.aarch64 as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64"
        },
        "product_reference": "dnsmasq-2.90-1.1.aarch64",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "dnsmasq-2.90-1.1.s390x as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x"
        },
        "product_reference": "dnsmasq-2.90-1.1.s390x",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "dnsmasq-2.90-1.1.x86_64 as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
        },
        "product_reference": "dnsmasq-2.90-1.1.x86_64",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-28450",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-28450"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-28450",
          "url": "https://www.suse.com/security/cve/CVE-2023-28450"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1209358 for CVE-2023-28450",
          "url": "https://bugzilla.suse.com/1209358"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-02-03T09:22:40Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2023-28450"
    },
    {
      "cve": "CVE-2023-50387",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-50387"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the \"KeyTrap\" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-50387",
          "url": "https://www.suse.com/security/cve/CVE-2023-50387"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1219823 for CVE-2023-50387",
          "url": "https://bugzilla.suse.com/1219823"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1220717 for CVE-2023-50387",
          "url": "https://bugzilla.suse.com/1220717"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1221586 for CVE-2023-50387",
          "url": "https://bugzilla.suse.com/1221586"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-02-03T09:22:40Z",
          "details": "important"
        }
      ],
      "title": "CVE-2023-50387"
    },
    {
      "cve": "CVE-2023-50868",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2023-50868"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the \"NSEC3\" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
          "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2023-50868",
          "url": "https://www.suse.com/security/cve/CVE-2023-50868"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1219823 for CVE-2023-50868",
          "url": "https://bugzilla.suse.com/1219823"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1219826 for CVE-2023-50868",
          "url": "https://bugzilla.suse.com/1219826"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1221586 for CVE-2023-50868",
          "url": "https://bugzilla.suse.com/1221586"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.aarch64",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.s390x",
            "SUSE Linux Micro 6.0:dnsmasq-2.90-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-02-03T09:22:40Z",
          "details": "important"
        }
      ],
      "title": "CVE-2023-50868"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.