CVE-2011-4099 Security feature bypass in n/a

Medium 4.6 Published 8 Feb 2014 Updated 6 Aug 2024

Local users can bypass chroot restrictions in the capsh program by exploiting a missing directory change, potentially escaping the sandbox.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2011-4099?

CVE-2011-4099 is a medium-severity vulnerability in n/a, published on 8 Feb 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The capsh program in libcap before 2.22 does not change the current working directory when the --chroot option is specified, which allows local users to bypass the chroot restrictions via unspecified vectors.

Weakness: CWE-264

Which versions are affected by CVE-2011-4099?

It affects 1 product.

Linux distribution packages (12)

`libcap` Red Hat:enterprise_linux:6::client	All versions	`0:2.16-5.5.el6`
`libcap-debuginfo` Red Hat:enterprise_linux:6::client	All versions	`0:2.16-5.5.el6`
`libcap-devel` Red Hat:enterprise_linux:6::client	All versions	`0:2.16-5.5.el6`
`libcap` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.16-5.5.el6`
`libcap-debuginfo` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.16-5.5.el6`
`libcap-devel` Red Hat:enterprise_linux:6::computenode	All versions	`0:2.16-5.5.el6`
`libcap` Red Hat:enterprise_linux:6::server	All versions	`0:2.16-5.5.el6`
`libcap-debuginfo` Red Hat:enterprise_linux:6::server	All versions	`0:2.16-5.5.el6`
`libcap-devel` Red Hat:enterprise_linux:6::server	All versions	`0:2.16-5.5.el6`
`libcap` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.16-5.5.el6`
`libcap-debuginfo` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.16-5.5.el6`
`libcap-devel` Red Hat:enterprise_linux:6::workstation	All versions	`0:2.16-5.5.el6`

Products include Libcap Libcap.

How do I fix CVE-2011-4099?

Upgrade to a fixed version.

Is CVE-2011-4099 being exploited?

There is no known exploitation of CVE-2011-4099 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2011-4099, GHSA-5467-hwqm-9669, RHSA-2011:1694.