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CVE-2013-2171 is an improper permission-validation vulnerability in FreeBSD's kernel virtual-memory mmap implementation. The vm_map_lookup function does not correctly determine whether a task is authorized to write to a mapped memory location. A local unprivileged process can use read access together with mmap and ptrace system calls to modify memory or files for which it lacks write permission, potentially enabling privilege escalation.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit module (modules/exploits/freebsd/local/mmap.rb) that exploits CVE-2013-2171, a local privilege escalation vulnerability in FreeBSD 9.0 and 9.1 (x86). The exploit works by uploading a custom payload and a crafted exploit binary to a writable directory (default: /tmp) on the target system. The exploit binary is based on a template (CVE-2013-2171.bin) and is modified to execute the uploaded payload. Upon execution, the payload runs with elevated privileges, typically granting a root shell. The module is operational and requires a shell session on the target. The only endpoints involved are local file paths used for payload and exploit deployment. The code is written in Ruby and is designed to be used within the Metasploit framework.
This repository contains a local privilege escalation exploit for FreeBSD 9.0 and 9.1, targeting CVE-2013-2171. The main file, 26368.c, is a C program that exploits a vulnerability in the mmap and ptrace system calls to overwrite the /usr/sbin/timedc binary, ultimately allowing the attacker to execute a root shell (/bin/sh) if successful. The exploit must be compiled and run locally on a vulnerable FreeBSD system. The README.md provides clear instructions for checking the kernel version, transferring, compiling, and executing the exploit. The LICENSE file is MIT. The exploit does not target any network services and requires local access to the system. The main fingerprintable endpoints are the file paths /bin/sh (used to spawn a shell) and /usr/sbin/timedc (the target of the exploit).
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2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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