CVE-2012-1015: Input Validation

Published Aug 6, 2012

Updated

The kdchandleprotectednegotiation function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and 1.10.x before 1.10.3 attempts to calculate a checksum before verifying that the key type is appropriate for a checksum, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer free, heap memory corruption, and daemon crash) via a crafted AS-REQ request.

Affected Software

11 affected components

MIT Kerberos 5=1.8

MIT Kerberos 5=1.8.1

MIT Kerberos 5=1.8.2

MIT Kerberos 5=1.8.3

MIT Kerberos 5=1.8.4

MIT Kerberos 5=1.8.5

MIT Kerberos 5=1.8.6

MIT Kerberos 5=1.9.4

MIT Kerberos 5=1.10

MIT Kerberos 5=1.10.1

MIT Kerberos 5=1.10.2

Remediation

Patch Available

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2012-001.txt

Event History

Aug 6, 2012

CVE Published

via MITRE·04:00 PM

Data Sourced

via MITRE·04:00 PM

Description

Frequently Asked Questions

What is the severity of CVE-2012-1015?

CVE-2012-1015 has a High severity rating due to the potential for remote code execution.

How do I fix CVE-2012-1015?

To fix CVE-2012-1015, upgrade MIT Kerberos 5 to version 1.9.5 or later for 1.9.x or to version 1.10.3 or later for 1.10.x.

What versions of MIT Kerberos are affected by CVE-2012-1015?

CVE-2012-1015 affects MIT Kerberos 5 versions 1.8.x up to 1.8.6, 1.9.x before 1.9.5, and 1.10.x before 1.10.3.

Is there a workaround for CVE-2012-1015?

There are no specific workarounds for CVE-2012-1015; the recommended action is to upgrade to a fixed version.

What is the impact of CVE-2012-1015?

The impact of CVE-2012-1015 can lead to remote attackers executing arbitrary code on vulnerable systems.