SB2015110911 - Input validation error in web.mit.edu krb5
Published: November 9, 2015 Updated: August 4, 2020
Security Bulletin ID
SB2015110911
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2015-2696)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) before 1.14 relies on an inappropriate context handle, which allows remote attackers to cause a denial of service (incorrect pointer read and process crash) via a crafted IAKERB packet that is mishandled during a gss_inquire_context call.
Remediation
Install update from vendor's website.
References
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8244
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00022.html
- http://www.debian.org/security/2015/dsa-3395
- http://www.securityfocus.com/bid/90675
- http://www.securitytracker.com/id/1034084
- http://www.ubuntu.com/usn/USN-2810-1
- https://github.com/krb5/krb5/commit/e04f0283516e80d2f93366e0d479d13c9b5c8c2a
- https://security.gentoo.org/glsa/201611-14