oesa-2026-3646
Vulnerability from osv_openeuler
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)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"libipa_hbac-2.9.4-24.oe2403sp1.aarch64.rpm",
"libipa_hbac-devel-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_autofs-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_certmap-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_certmap-devel-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_idmap-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_idmap-devel-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_nss_idmap-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_nss_idmap-devel-2.9.4-24.oe2403sp1.aarch64.rpm",
"libsss_sudo-2.9.4-24.oe2403sp1.aarch64.rpm",
"python3-libipa_hbac-2.9.4-24.oe2403sp1.aarch64.rpm",
"python3-libsss_nss_idmap-2.9.4-24.oe2403sp1.aarch64.rpm",
"python3-sss-2.9.4-24.oe2403sp1.aarch64.rpm",
"python3-sss-murmur-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-ad-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-client-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-common-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-common-pac-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-dbus-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-debuginfo-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-debugsource-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-idp-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-ipa-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-kcm-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-krb5-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-krb5-common-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-ldap-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-nfs-idmap-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-proxy-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-tools-2.9.4-24.oe2403sp1.aarch64.rpm",
"sssd-winbind-idmap-2.9.4-24.oe2403sp1.aarch64.rpm"
],
"noarch": [
"python3-sssdconfig-2.9.4-24.oe2403sp1.noarch.rpm",
"sssd-help-2.9.4-24.oe2403sp1.noarch.rpm"
],
"src": [
"sssd-2.9.4-24.oe2403sp1.src.rpm"
],
"x86_64": [
"libipa_hbac-2.9.4-24.oe2403sp1.x86_64.rpm",
"libipa_hbac-devel-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_autofs-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_certmap-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_certmap-devel-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_idmap-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_idmap-devel-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_nss_idmap-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_nss_idmap-devel-2.9.4-24.oe2403sp1.x86_64.rpm",
"libsss_sudo-2.9.4-24.oe2403sp1.x86_64.rpm",
"python3-libipa_hbac-2.9.4-24.oe2403sp1.x86_64.rpm",
"python3-libsss_nss_idmap-2.9.4-24.oe2403sp1.x86_64.rpm",
"python3-sss-2.9.4-24.oe2403sp1.x86_64.rpm",
"python3-sss-murmur-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-ad-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-client-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-common-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-common-pac-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-dbus-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-debuginfo-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-debugsource-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-idp-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-ipa-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-kcm-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-krb5-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-krb5-common-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-ldap-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-nfs-idmap-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-proxy-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-tools-2.9.4-24.oe2403sp1.x86_64.rpm",
"sssd-winbind-idmap-2.9.4-24.oe2403sp1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP1",
"name": "sssd",
"purl": "pkg:rpm/openEuler/sssd\u0026distro=openEuler-24.03-LTS-SP1"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.4-24.oe2403sp1"
}
],
"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-2026-3646",
"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-2026-3646"
},
{
"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"
]
}
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.
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