CVE-2012-5134 Memory corruption in n/a

Medium 6.8 Published 28 Nov 2012 Updated 6 Aug 2024

Remote attackers can execute arbitrary code or cause denial of service via crafted XML entities in libxml2, affecting applications like Chrome.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2012-5134?

CVE-2012-5134 is a medium-severity memory corruption vulnerability in Apple Iphone Os, published on 28 Nov 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Heap-based buffer underflow in the xmlParseAttValueComplex function in parser.c in libxml2 2.9.0 and earlier, as used in Google Chrome before 23.0.1271.91 and other products, allows remote attackers to cause a denial of service or possibly execute arbitrary code via crafted entities in an XML document.

Weakness: CWE-119

Which versions are affected by CVE-2012-5134?

It affects 3 products.

Linux distribution packages (30)

`libxml2` Red Hat:enterprise_linux:5::client	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2-debuginfo` Red Hat:enterprise_linux:5::client	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2-python` Red Hat:enterprise_linux:5::client	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2-debuginfo` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2-devel` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2` Red Hat:enterprise_linux:5::server	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2-debuginfo` Red Hat:enterprise_linux:5::server	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2-devel` Red Hat:enterprise_linux:5::server	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2-python` Red Hat:enterprise_linux:5::server	All versions	`0:2.6.26-2.1.15.el5_8.6`
`libxml2` Red Hat:enterprise_linux:6::client	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-devel` Red Hat:enterprise_linux:6::client	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-python` Red Hat:enterprise_linux:6::client	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-static` Red Hat:enterprise_linux:6::client	All versions	`0:2.7.6-8.el6_3.4`
`libxml2` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-debuginfo` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-devel` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-python` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-static` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.7.6-8.el6_3.4`
`libxml2` Red Hat:enterprise_linux:6::server	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-devel` Red Hat:enterprise_linux:6::server	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-python` Red Hat:enterprise_linux:6::server	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-static` Red Hat:enterprise_linux:6::server	All versions	`0:2.7.6-8.el6_3.4`
`libxml2` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-devel` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-python` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.7.6-8.el6_3.4`
`libxml2-static` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.7.6-8.el6_3.4`

Products include Apple Iphone Os, Google Chrome, Xmlsoft Libxml2.

How do I fix CVE-2012-5134?

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-2012-5134 being exploited?

There is no known exploitation of CVE-2012-5134 in the wild and no public exploit code.

All Apple Iphone Os vulnerabilities

Sources

Also known as DEBIAN-CVE-2012-5134, DSA-2580-1, GHSA-j7mm-3m3p-jw5x, RHSA-2012:1512.