CVE-2015-5292

Memory leak in the Privilege Attribute Certificate (PAC) responder plugin (sssd_pac_plugin.so) in System Security Services Daemon (SSSD) 1.10 before 1.13.1 allows remote authenticated users to cause a denial of service (memory consumption) via a large number of logins that trigger parsing of PAC blobs during Kerberos authentication.

Published: 2015-10-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-5292 is rated Moderate Risk (59/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.67%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-5292

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.73% 3.67% +0.93%
2 2025-03-30 4.75% 2.73% -2.02%
3 2025-03-29 — 4.75% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5292

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 6.9 [email protected]

Weakness enumeration for CVE-2015-5292

OS Trackers for CVE-2015-5292

vendor priority summary link
debian not yet assigned CVE-2015-5292 not yet assigned priority: Debian including 1 source packages (sssd), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2015-5292
redhat low — https://access.redhat.com/security/cve/CVE-2015-5292
ubuntu low CVE-2015-5292 low priority: Ubuntu including 1 source packages (sssd), 12 status rows across 12 suites (artful, bionic, cosmic, disco, precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): not-affected 8, ignored 2, DNE 1, needs-triage 1. https://ubuntu.com/security/CVE-2015-5292

Affected software / configurations for CVE-2015-5292

Vendor Product Version Raw CPE
fedoraproject sssd 1.10.0 cpe:2.3:a:fedoraproject:sssd:1.10.0:*:*:*:*:*:*:*
fedoraproject sssd 1.10.1 cpe:2.3:a:fedoraproject:sssd:1.10.1:*:*:*:*:*:*:*
fedoraproject sssd 1.11.0 cpe:2.3:a:fedoraproject:sssd:1.11.0:*:*:*:*:*:*:*
fedoraproject sssd 1.11.1 cpe:2.3:a:fedoraproject:sssd:1.11.1:*:*:*:*:*:*:*
fedoraproject sssd 1.11.2 cpe:2.3:a:fedoraproject:sssd:1.11.2:*:*:*:*:*:*:*
fedoraproject sssd 1.11.3 cpe:2.3:a:fedoraproject:sssd:1.11.3:*:*:*:*:*:*:*
fedoraproject sssd 1.11.4 cpe:2.3:a:fedoraproject:sssd:1.11.4:*:*:*:*:*:*:*
fedoraproject sssd 1.11.5 cpe:2.3:a:fedoraproject:sssd:1.11.5:*:*:*:*:*:*:*
fedoraproject sssd 1.11.6 cpe:2.3:a:fedoraproject:sssd:1.11.6:*:*:*:*:*:*:*
fedoraproject sssd 1.11.7 cpe:2.3:a:fedoraproject:sssd:1.11.7:*:*:*:*:*:*:*
fedoraproject sssd 1.12.0 cpe:2.3:a:fedoraproject:sssd:1.12.0:*:*:*:*:*:*:*
fedoraproject sssd 1.12.1 cpe:2.3:a:fedoraproject:sssd:1.12.1:*:*:*:*:*:*:*
fedoraproject sssd 1.12.2 cpe:2.3:a:fedoraproject:sssd:1.12.2:*:*:*:*:*:*:*
fedoraproject sssd 1.12.3 cpe:2.3:a:fedoraproject:sssd:1.12.3:*:*:*:*:*:*:*
fedoraproject sssd 1.12.4 cpe:2.3:a:fedoraproject:sssd:1.12.4:*:*:*:*:*:*:*
fedoraproject sssd 1.12.5 cpe:2.3:a:fedoraproject:sssd:1.12.5:*:*:*:*:*:*:*
fedoraproject sssd 1.13.0 cpe:2.3:a:fedoraproject:sssd:1.13.0:*:*:*:*:*:*:*

References for CVE-2015-5292

URL Tags
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169110.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169597.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169613.html
http://permalink.gmane.org/gmane.linux.redhat.sssd.user/3422 Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-2019.html
http://rhn.redhat.com/errata/RHSA-2015-2355.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/77529
http://www.securitytracker.com/id/1034038
https://bugzilla.redhat.com/show_bug.cgi?id=1267580
https://fedorahosted.org/sssd/attachment/ticket/2803/0001-Fix-memory-leak-in-sssdpac_verify.patch
https://fedorahosted.org/sssd/ticket/2803
https://fedorahosted.org/sssd/wiki/Releases/Notes-1.13.1
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