Buffer overflow in Kerberos 5 - CVE-2015-8631
Published: February 13, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32307
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2015-8631
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MIT
Affected software:
Kerberos 5
Kerberos 5
Detailed vulnerability description
The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.
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.
How to mitigate CVE-2015-8631
Install update from vendor's website.
Sources
- 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