CVE-2015-5292

CVE-2015-5292 is a medium-severity vulnerability in Fedoraproject Sssd with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 4% (88th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-399
• Affected product: Fedoraproject Sssd
• Published: 2015-10-29
• Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.

How severe is CVE-2015-5292?

CVE-2015-5292 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2015-5292 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5292?

CVE-2015-5292 primarily affects Fedoraproject Sssd. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-5292?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-5292 published?

CVE-2015-5292 was published on 2015-10-29 and last updated on 2026-06-17.

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
• https://fedorahosted.org/sssd/wiki/Releases/Notes-1.13.1

Affected products (17)

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

More vulnerabilities in Fedoraproject Sssd

• CVE-2022-4254 — High (CVSS 8.8): sssd: libsss_certmap fails to sanitise certificate data used in LDAP filters
• CVE-2021-3621 — High (CVSS 8.8): A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and…
• CVE-2012-3462 — High (CVSS 8.8): A flaw was found in SSSD version 1.9.0. The SSSD's access-provider logic causes the result of the HBAC rule processing…
• CVE-2023-3758 — High (CVSS 7.1): A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This…
• CVE-2026-12610 — Medium (CVSS 6.4): A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free…
• CVE-2018-16838 — Medium (CVSS 5.4): A flaw was found in sssd Group Policy Objects implementation. When the GPO is not readable by SSSD due to a too strict…

All CVEs affecting Fedoraproject Sssd →

Other CWE-399 (Resource Management Errors) vulnerabilities

• CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
• CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
• CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
• CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →