usn-8355-1
Vulnerability from osv_ubuntu
Published
2026-06-01 14:05
Modified
2026-06-01 14:05
Summary
sssd vulnerability
Details
It was discovered that SSSD did not properly handle raw bytes in the PAM passkey responder. A local attacker could possibly use this issue to cause the SSSD PAM responder to crash, resulting in a denial of service.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-6245",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libipa-hbac0t64",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "libnss-sss",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "libpam-sss",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "libsss-certmap0",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "libsss-idmap0",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "libsss-nss-idmap0",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "libsss-sudo",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "python3-libipa-hbac",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "python3-libsss-nss-idmap",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "python3-sss",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-ad",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-ad-common",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-common",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-dbus",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-idp",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-ipa",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-kcm",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-krb5",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-krb5-common",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-ldap",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-passkey",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-proxy",
"binary_version": "2.9.4-1.1ubuntu6.5"
},
{
"binary_name": "sssd-tools",
"binary_version": "2.9.4-1.1ubuntu6.5"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "sssd",
"purl": "pkg:deb/ubuntu/sssd@2.9.4-1.1ubuntu6.5?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.4-1.1ubuntu6.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.9.1-2ubuntu2",
"2.9.1-2ubuntu3",
"2.9.2-1ubuntu2",
"2.9.4-1ubuntu1",
"2.9.4-1.1ubuntu3",
"2.9.4-1.1ubuntu5",
"2.9.4-1.1ubuntu6",
"2.9.4-1.1ubuntu6.1",
"2.9.4-1.1ubuntu6.2",
"2.9.4-1.1ubuntu6.3",
"2.9.4-1.1ubuntu6.4"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-6245",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libipa-hbac0t64",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "libnss-sss",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "libpam-sss",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "libsss-certmap0",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "libsss-idmap0",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "libsss-nss-idmap0",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "libsss-sudo",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "python3-libipa-hbac",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "python3-libsss-nss-idmap",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "python3-sss",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-ad",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-ad-common",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-common",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-dbus",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-idp",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-ipa",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-kcm",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-krb5",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-krb5-common",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-ldap",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-passkey",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-proxy",
"binary_version": "2.10.1-2ubuntu5.2"
},
{
"binary_name": "sssd-tools",
"binary_version": "2.10.1-2ubuntu5.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "sssd",
"purl": "pkg:deb/ubuntu/sssd@2.10.1-2ubuntu5.2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.10.1-2ubuntu5.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.10.1-2ubuntu4",
"2.10.1-2ubuntu5",
"2.10.1-2ubuntu5.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-6245",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libipa-hbac0t64",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "libnss-sss",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "libpam-sss",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "libsss-certmap0",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "libsss-idmap0",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "libsss-nss-idmap0",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "libsss-sudo",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "python3-libipa-hbac",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "python3-libsss-nss-idmap",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "python3-sss",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-ad",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-ad-common",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-common",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-dbus",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-idp",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-ipa",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-kcm",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-krb5",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-krb5-common",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-ldap",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-passkey",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-proxy",
"binary_version": "2.12.0-1ubuntu5.1"
},
{
"binary_name": "sssd-tools",
"binary_version": "2.12.0-1ubuntu5.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "sssd",
"purl": "pkg:deb/ubuntu/sssd@2.12.0-1ubuntu5.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.12.0-1ubuntu5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.10.1-2ubuntu5",
"2.10.1-2ubuntu7",
"2.12.0-1ubuntu3",
"2.12.0-1ubuntu4",
"2.12.0-1ubuntu5"
]
}
],
"aliases": [],
"details": "It was discovered that SSSD did not properly handle raw bytes in the PAM\npasskey responder. A local attacker could possibly use this issue to cause\nthe SSSD PAM responder to crash, resulting in a denial of service.",
"id": "USN-8355-1",
"modified": "2026-06-01T14:05:32Z",
"published": "2026-06-01T14:05:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8355-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-6245"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "sssd vulnerability",
"upstream": [
"UBUNTU-CVE-2026-6245"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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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