CVE-2006-0645 Memory corruption in n/a

High 7.5 Published 10 Feb 2006 Updated 7 Aug 2024

Attackers can crash the DER decoder or execute arbitrary code via out-of-bounds access in the libtasn1 library used by GnuTLS and Shishi.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2006-0645?

CVE-2006-0645 is a high-severity memory corruption vulnerability in n/a, published on 10 Feb 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tiny ASN.1 Library (libtasn1) before 0.2.18, as used by (1) GnuTLS 1.2.x before 1.2.10 and 1.3.x before 1.3.4, and (2) GNU Shishi, allows attackers to crash the DER decoder and possibly execute arbitrary code via "out-of-bounds access" caused by invalid input, as demonstrated by the ProtoVer SSL test suite.

Which versions are affected by CVE-2006-0645?

It affects 1 product.

Linux distribution packages (12)

`gnutls` Red Hat:enterprise_linux:4::as	All versions	`0:1.0.20-3.2.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:4::as	All versions	`0:1.0.20-3.2.2`
`gnutls-devel` Red Hat:enterprise_linux:4::as	All versions	`0:1.0.20-3.2.2`
`gnutls` Red Hat:enterprise_linux:4::desktop	All versions	`0:1.0.20-3.2.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:4::desktop	All versions	`0:1.0.20-3.2.2`
`gnutls-devel` Red Hat:enterprise_linux:4::desktop	All versions	`0:1.0.20-3.2.2`
`gnutls` Red Hat:enterprise_linux:4::es	All versions	`0:1.0.20-3.2.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:4::es	All versions	`0:1.0.20-3.2.2`
`gnutls-devel` Red Hat:enterprise_linux:4::es	All versions	`0:1.0.20-3.2.2`
`gnutls` Red Hat:enterprise_linux:4::ws	All versions	`0:1.0.20-3.2.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:4::ws	All versions	`0:1.0.20-3.2.2`
`gnutls-devel` Red Hat:enterprise_linux:4::ws	All versions	`0:1.0.20-3.2.2`

Products include Free Software Foundation Inc. Libtasn1.

How do I fix CVE-2006-0645?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2006-0645 being exploited?

There is no known exploitation of CVE-2006-0645 in the wild and no public exploit code.

CVE-2004-0401 Memory corruption in n/a Critical 10.0

Sources

Also known as DSA-985-1, DSA-986-1, GHSA-2w9r-mr74-qj9p, RHSA-2006:0207.