{"id":"CVE-2026-68742","title":"Sssd: sssd: nss responder out-of-bounds read via unchecked addrlen in gethostbyaddr","summary":"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 t…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-125"],"vendor":"Red Hat","product":"sssd","affected":["sssd (all versions)","sssd","sssd (all versions)","sssd (all versions)","sssd (all versions)","openshift/ose-rhel-coreos-8 (all versions)","openshift/ose-rhel-coreos-9 (all versions)","openshift/ose-rhel-coreos-9 (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-08-03T20:00:15.885432Z"},"published":"2026-08-03","updated":"2026-11-05","sourceUpdated":"2026-11-05T22:51:38.914Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68742","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-68742"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2509762","label":"RHBZ#2509762"}],"tags":["cve.org"],"epss":0.0013,"epssPercentile":0.02648,"ingestedAt":"2026-11-05T23:41:31.939Z","slug":"CVE-2026-68742","body":"## Overview\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.\n\n## Affected\n\n- `sssd (all versions)`\n- `sssd`\n- `sssd (all versions)`\n- `sssd (all versions)`\n- `sssd (all versions)`\n- `openshift/ose-rhel-coreos-8 (all versions)`\n- `openshift/ose-rhel-coreos-9 (all versions)`\n- `openshift/ose-rhel-coreos-9 (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}