CVE-2015-5292

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-10-29 · updated 2026-06-17
Weakness: CWE-399

Description

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.

Affected products

[UNKNOWN] sssd: 1.10.0, 1.10.1, 1.11.0, 1.11.1, 1.11.2, 1.11.3 (+11)

References

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
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

Get alerted when CVE-2015-5292 or the next vulnerability affects your stack