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oesa-2026-3647
Vulnerability from osv_openeuler
Published
2026-09-05 15:03
Modified
2026-09-05 15:03
Summary
sssd security update
Details

Provides a set of daemons to manage access to remote directories and authentication mechanisms. It provides an NSS and PAM interface toward the system and a pluggable back end system to connect to multiple different account sources. It is also the basis to provide client auditing and policy services for projects like FreeIPA.

Security Fix(es):

A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR request to the NSS responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.(CVE-2026-68742)

A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process.(CVE-2026-68744)


{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libipa_hbac-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libipa_hbac-devel-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_autofs-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_certmap-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_certmap-devel-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_idmap-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_idmap-devel-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_nss_idmap-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_nss_idmap-devel-2.9.4-24.oe2403sp3.aarch64.rpm",
          "libsss_sudo-2.9.4-24.oe2403sp3.aarch64.rpm",
          "python3-libipa_hbac-2.9.4-24.oe2403sp3.aarch64.rpm",
          "python3-libsss_nss_idmap-2.9.4-24.oe2403sp3.aarch64.rpm",
          "python3-sss-2.9.4-24.oe2403sp3.aarch64.rpm",
          "python3-sss-murmur-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-ad-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-client-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-common-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-common-pac-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-dbus-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-debuginfo-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-debugsource-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-idp-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-ipa-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-kcm-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-krb5-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-krb5-common-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-ldap-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-nfs-idmap-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-proxy-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-tools-2.9.4-24.oe2403sp3.aarch64.rpm",
          "sssd-winbind-idmap-2.9.4-24.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "python3-sssdconfig-2.9.4-24.oe2403sp3.noarch.rpm",
          "sssd-help-2.9.4-24.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "sssd-2.9.4-24.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "libipa_hbac-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libipa_hbac-devel-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_autofs-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_certmap-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_certmap-devel-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_idmap-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_idmap-devel-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_nss_idmap-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_nss_idmap-devel-2.9.4-24.oe2403sp3.x86_64.rpm",
          "libsss_sudo-2.9.4-24.oe2403sp3.x86_64.rpm",
          "python3-libipa_hbac-2.9.4-24.oe2403sp3.x86_64.rpm",
          "python3-libsss_nss_idmap-2.9.4-24.oe2403sp3.x86_64.rpm",
          "python3-sss-2.9.4-24.oe2403sp3.x86_64.rpm",
          "python3-sss-murmur-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-ad-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-client-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-common-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-common-pac-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-dbus-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-debuginfo-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-debugsource-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-idp-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-ipa-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-kcm-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-krb5-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-krb5-common-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-ldap-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-nfs-idmap-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-proxy-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-tools-2.9.4-24.oe2403sp3.x86_64.rpm",
          "sssd-winbind-idmap-2.9.4-24.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "sssd",
        "purl": "pkg:rpm/openEuler/sssd\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.4-24.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Provides a set of daemons to manage access to remote directories and authentication mechanisms. It provides an NSS and PAM interface toward the system and a pluggable back end system to connect to multiple different account sources. It is also the basis to provide client auditing and policy services for projects like FreeIPA.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR request to the NSS responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.(CVE-2026-68742)\n\nA flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process.(CVE-2026-68744)",
  "id": "OESA-2026-3647",
  "modified": "2026-09-05T15:03:28Z",
  "published": "2026-09-05T15:03:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3647"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68742"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68744"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "sssd security update",
  "upstream": [
    "CVE-2026-68742",
    "CVE-2026-68744"
  ]
}



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