CVE-2013-2116 Denial of service in n/a

Medium 5.0 Published 3 Jul 2013 Updated 6 Aug 2024

Remote attackers can cause a denial of service via a crafted padding length in GnuTLS, leading to a buffer over-read and crash.

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

What is CVE-2013-2116?

CVE-2013-2116 is a medium-severity denial of service vulnerability in Gnu Gnutls, published on 3 Jul 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The _gnutls_ciphertext2compressed function in lib/gnutls_cipher.c in GnuTLS 2.12.23 allows remote attackers to cause a denial of service (buffer over-read and crash) via a crafted padding length. NOTE: this might be due to an incorrect fix for CVE-2013-0169.

Weakness: CWE-20

Which versions are affected by CVE-2013-2116?

It affects 1 product.

Linux distribution packages (25)

`gnutls` Red Hat:enterprise_linux:5::server	All versions	`0:1.4.1-10.el5_9.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:5::server	All versions	`0:1.4.1-10.el5_9.2`
`gnutls-devel` Red Hat:enterprise_linux:5::server	All versions	`0:1.4.1-10.el5_9.2`
`gnutls-utils` Red Hat:enterprise_linux:5::server	All versions	`0:1.4.1-10.el5_9.2`
`gnutls` Red Hat:enterprise_linux:6::client	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-devel` Red Hat:enterprise_linux:6::client	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-guile` Red Hat:enterprise_linux:6::client	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-utils` Red Hat:enterprise_linux:6::client	All versions	`0:2.8.5-10.el6_4.2`
`gnutls` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-devel` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-guile` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-utils` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.8.5-10.el6_4.2`
`rhev-hypervisor6` Red Hat:enterprise_linux:6::hypervisor	All versions	`0:6.4-20130709.0.el6_4`
`gnutls` Red Hat:enterprise_linux:6::server	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-devel` Red Hat:enterprise_linux:6::server	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-guile` Red Hat:enterprise_linux:6::server	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-utils` Red Hat:enterprise_linux:6::server	All versions	`0:2.8.5-10.el6_4.2`
`gnutls` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-devel` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-guile` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.8.5-10.el6_4.2`
`gnutls-utils` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.8.5-10.el6_4.2`

Products include Gnu Gnutls.

How do I fix CVE-2013-2116?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2013-2116 being exploited?

There is no known exploitation of CVE-2013-2116 in the wild and no public exploit code.

All Gnu Gnutls vulnerabilities

Sources

Also known as DSA-2697-1, GHSA-2vj6-mvxm-4f5f, RHSA-2013:0883, RHSA-2013:1076.