PT-2013-3489 · Linux · Linux Kernel

Andy Lutomirski · CVE-2013-1956 · Published 2013-04-24 · Updated 2023-02-13

Positive Technologies (AI Summary)

CVSS v2.0

2.1

Low

Base vector

AV:L/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.8.6

Description The issue allows local users to bypass intended filesystem restrictions. This is due to the create user ns function in kernel/user namespace.c not checking whether a chroot directory exists that differs from the namespace root directory, enabling users to exploit this via a crafted clone system call.

Recommendations For versions prior to 3.8.6, update to version 3.8.6 or later to resolve the issue.

Fix

Weakness Enumeration

CWE-264

Related Identifiers

CVE-2013-1956

Affected Products

Linux Kernel

References · 12

• https://cve.org/CVERecord?id=CVE-2013-1956 · Security Note
• https://osv.dev/vulnerability/CVE-2013-1956 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2013-1956 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2013-1956 · Vendor Advisory
• https://ubuntu.com/security/CVE-2013-1956 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2013-1956 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2013-1956 · Vendor Advisory
• https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d · Note
• http://openwall.com/lists/oss-security/2013/04/16 · Note
• http://kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6 · Note
• http://openwall.com/lists/oss-security/2013/04/16/11 · Note
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d · Note