Description
The (1) phrafx and (2) phgrafx-startup programs in QNX realtime operating system (RTOS) 4.25 and 6.1.0 do not properly drop privileges before executing the system command, which allows local users to execute arbitrary commands by modifying the PATH environment variable to reference a malicious crttrap program.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 2
- QNX RTOS 4.25/6.1 - 'phgrafx' Local Privilege Escalation EDB-21503 · local · Jun 3, 2002 · verified
- QNX RTOS 4.25/6.1 - 'phgrafx-startup' Local Privilege Escalation EDB-21504 · local · Jun 3, 2002 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 4916 vdb-entry
- 4915 vdb-entry
- 20020603 QNX mailing-list
- qnx-rtos-phgrafx-privileges(9257) vdb-entry