CVE-2013-2171
First published: Tue Jul 02 2013(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD Kernel | =9.0 | |
| FreeBSD Kernel | =9.1 | |
| FreeBSD Kernel | =9.1-p4 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2013-2171?
CVE-2013-2171 has a medium to high severity rating due to its ability to allow local users to bypass filesystem write permissions.
How do I fix CVE-2013-2171?
To fix CVE-2013-2171, you should update your FreeBSD system to a version higher than 9.1-RELEASE-p4.
Who is affected by CVE-2013-2171?
CVE-2013-2171 affects FreeBSD versions 9.0, 9.1, and 9.1-p4.
What systems are vulnerable to CVE-2013-2171?
Systems running FreeBSD 9.0 through 9.1-RELEASE-p4 are vulnerable to CVE-2013-2171.
What happens if CVE-2013-2171 is exploited?
Exploitation of CVE-2013-2171 can allow local users to gain unauthorized write access to memory locations and possibly compromise file systems.
- agent/softwarecombine
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/weakness
- agent/author
- agent/references
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/freebsd
- canonical/freebsd kernel
- version/freebsd kernel/9.0
- version/freebsd kernel/9.1
- version/freebsd kernel/9.1-p4