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CVE-2013-2171

Status Candidate

Overview

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.

Related Files

FreeBSD 9 Address Space Manipulation Privilege Escalation
Posted Jun 26, 2013
Authored by Alan Cox, Hunger, sinn3r, Konstantin Belousov | Site metasploit.com

This Metasploit module exploits a vulnerability that can be used to modify portions of a process's address space, which may lead to privilege escalation. Systems such as FreeBSD 9.0 and 9.1 are known to be vulnerable.

tags | exploit
systems | freebsd
advisories | CVE-2013-2171, OSVDB-94414
MD5 | b258cd8526da63e79f9daeb6f93717bc
Debian Security Advisory 2714-1
Posted Jun 26, 2013
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2714-1 - Konstantin Belousov and Alan Cox discovered that insufficient permission checks in the memory management of the FreeBSD kernel could lead to privilege escalation.

tags | advisory, kernel
systems | linux, freebsd, debian
advisories | CVE-2013-2171
MD5 | 43a490e49f21acd4a57cd0d37f03cab7
FreeBSD 9.0+ Privilege Escalation
Posted Jun 22, 2013
Authored by SynQ

FreeBSD 9.0+ privilege escalation exploit that leverages the mmap vulnerability.

tags | exploit
systems | freebsd
advisories | CVE-2013-2171
MD5 | 6239d1b36fc39efd11b6aede8d7b843d
FreeBSD 9.0 / 9.1 mmap/ptrace Exploit
Posted Jun 19, 2013
Authored by Hunger

FreeBSD versions 9.0 and 9.1 mmap/ptrace privilege escalation exploit that leverages the issue described in FreeBSD-SA-13:06.

tags | exploit
systems | freebsd
advisories | CVE-2013-2171
MD5 | 30fe24f7038b01c2535bfd0ca8fdb5f3
FreeBSD mmap Privilege Escalation
Posted Jun 19, 2013
Authored by _hugsy_

This exploits performs privilege escalation leveraging the mmap vulnerability in FreeBSD 9.1 as described in FreeBSD-SA-13:06.

tags | exploit
systems | freebsd
advisories | CVE-2013-2171
MD5 | a06332f6714f24b7f7835976f83af60a
FreeBSD Security Advisory - mmap Privilege Escalation
Posted Jun 18, 2013
Site security.freebsd.org

FreeBSD Security Advisory - Due to insufficient permission checks in the virtual memory system, a tracing process (such as a debugger) may be able to modify portions of the traced process's address space to which the traced process itself does not have write access. This error can be exploited to allow unauthorized modification of an arbitrary file to which the attacker has read access, but not write access. Depending on the file and the nature of the modifications, this can result in privilege escalation. To exploit this vulnerability, an attacker must be able to run arbitrary code with user privileges on the target system.

tags | advisory, arbitrary
systems | freebsd
advisories | CVE-2013-2171
MD5 | 6b93f76d05b988e765c69c621431c185
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