Description
In FreeBSD before 11.2-RELEASE, multiple issues with the implementation of the stack guard-page reduce the protections afforded by the guard-page. This results in the possibility a poorly written process could be cause a stack overflow.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| FreeBSD | FreeBSD | before 11.2-RELEASE | — |
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
- FreeBSD - 'FGPU' Stack Clash (PoC) EDB-42277 · dos · Jun 28, 2017 · verified
- FreeBSD - 'FGPE' Stack Clash (PoC) EDB-42278 · dos · Jun 28, 2017 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 42277 exploit
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
- 42278 exploit