CVE-2013-2171

Description

The vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEASE-p4 does not properly determine whether a task should have write access to a memory location, which allows local users to bypass filesystem write permissions and consequently gain privileges via a crafted application that leverages read permissions, and makes mmap and ptrace system calls.

Category

6.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 24.41% Top 5%
Vendor Advisory freebsd.org Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.freebsd.org/security/advisories/FreeBSD-SA-13:06.mmap.asc vendor advisory
http://www.debian.org/security/2013/dsa-2714 vendor advisory
http://svnweb.freebsd.org/base?view=revision&revision=251901

Frequently Asked Questions

What is the severity of CVE-2013-2171?
CVE-2013-2171 has been scored as a medium severity vulnerability.
How to fix CVE-2013-2171?
To fix CVE-2013-2171, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-2171 being actively exploited in the wild?
It is possible that CVE-2013-2171 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~24% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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