Strix
26.1K

CVE-2013-1956

UnknownEPSS 0.38%

Last modified

CVE-2013-1956 is a vulnerability of currently unknown severity. The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.

Metrics

EPSS Probability
0.38%

30.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel<= 3.8.5
LinuxLinux Kernel3.8.0
LinuxLinux Kernel3.8.1
LinuxLinux Kernel3.8.2
LinuxLinux Kernel3.8.3
LinuxLinux Kernel3.8.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2013-1956?
The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.
How severe is CVE-2013-1956?
Severity scoring for CVE-2013-1956 is pending analysis. The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2013-1956?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-1956?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST