CVE-2010-2693
Description
FreeBSD 7.1 through 8.1-PRERELEASE does not copy the read-only flag when creating a duplicate mbuf buffer reference, which allows local users to cause a denial of service (system file corruption) and gain privileges via the sendfile system call.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
FreeBSD - 'mbufs()' sendfile Cache Poisoning Privilege Escalation
OS impact
FreeBSD Affected 5 releases
| Version | Status | Fixed in |
|---|---|---|
| 8.1 | Affected | — |
| 8.0 | Affected | — |
| 7.3 | Affected | — |
| 7.2 | Affected | — |
| 7.1 | Affected | — |
References
- http://secunia.com/advisories/40567
- http://security.freebsd.org/advisories/FreeBSD-SA-10:07.mbuf.asc
- http://www.securityfocus.com/bid/41577
- http://www.securitytracker.com/id?1024182
- http://www.vupen.com/english/advisories/2010/1787
- http://secunia.com/advisories/40567
- http://security.freebsd.org/advisories/FreeBSD-SA-10:07.mbuf.asc
- http://www.securityfocus.com/bid/41577
- http://www.securitytracker.com/id?1024182
- http://www.vupen.com/english/advisories/2010/1787
CWEs
CWE-264
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.