Description
The hfs implementation in Apple Mac OS X 10.5.8 and 10.6.x before 10.6.5 supports hard links to directories and does not prevent certain deeply nested directory structures, which allows local users to cause a denial of service (filesystem corruption) via a crafted application that calls the mkdir and link functions, related to the fsck_hfs program in the diskdev_cmds component.
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 1
- Apple Mac OSX 10.6 - HFS FileSystem (Denial of Service) EDB-12375 · dos · Apr 24, 2010 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 1024723 vdb-entry
- http://support.apple.com/kb/HT4435
- 20100423 MacOS X 10.6.3 filesystem hfs Denial of Service Vulnerability third-party-advisory
- APPLE-SA-2010-11-10-1 vendor-advisory
- 39658 vdb-entry