What’s Vulnerable › Vulnerabilities
CVE-2015-8631
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 4.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2016-02-13 · updated 2026-06-17
- Weakness: CWE-772
Description
Multiple memory leaks in kadmin/server/server_stubs.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13.4 and 1.14.x before 1.14.1 allow remote authenticated users to cause a denial of service (memory consumption) via a request specifying a NULL principal name.
Affected products
- Debian Linux: 7.0, 8.0
- MIT Kerberos 5: before 1.13.4; from 1.14 before 1.14.1 — fixed in 1.13.4, 1.14.1
- openSUSE Leap: 42.1
- Opensuse: 13.2
- Oracle Corporation Oracle Linux: 6, 7
- RedHat Enterprise Linux Desktop: 6.0, 7.0
- RedHat Enterprise Linux Eus: 6.7, 7.2, 7.3, 7.4, 7.5, 7.6 (+1)
- RedHat Enterprise Linux Server: 6.0, 7.0
- RedHat Enterprise Linux Server Aus: 7.2, 7.3, 7.4, 7.6, 7.7
- RedHat Enterprise Linux Server Tus: 7.2, 7.3, 7.6, 7.7
- RedHat Enterprise Linux Workstation: 6.0, 7.0
How to fix
Upgrade to a fixed version: MIT Kerberos 5 1.13.4, 1.14.1. Check the vendor advisory for mitigations.
References
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8343
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00059.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00110.html
- http://rhn.redhat.com/errata/RHSA-2016-0493.html
- http://rhn.redhat.com/errata/RHSA-2016-0532.html
- http://www.debian.org/security/2016/dsa-3466
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- http://www.securitytracker.com/id/1034916
- https://github.com/krb5/krb5/commit/83ed75feba32e46f736fcce0d96a0445f29b96c2
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8343
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00059.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00110.html
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