CVE-2006-3083: Heimdal

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

The (1) krshd and (2) v4rcp applications in (a) MIT Kerberos 5 (krb5) up to 1.5, and 1.4.x before 1.4.4, when running on Linux and AIX, and (b) Heimdal 0.7.2 and earlier, do not check return codes for setuid calls, which allows local users to gain privileges by causing setuid to fail to drop privileges using attacks such as resource exhaustion.

Affected products

• Heimdal Heimdal: version 0.7.2 only
• Mit Kerberos 5: version 1.4 only; version 1.4.1 only; version 1.4.2 only; version 1.4.3 only; version 1.5 only

Published 2006-08-09. Last modified 2026-06-16.