CVE-2010-1938
Description
Off-by-one error in the __opiereadrec function in readrec.c in libopie in OPIE 2.4.1-test1 and earlier, as used on FreeBSD 6.4 through 8.1-PRERELEASE and other platforms, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via a long username, as demonstrated by a long USER command to the FreeBSD 8.0 ftpd.
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 8.0 - 'ftpd' (FreeBSD-SA-10:05) Off-By-One (PoC)
OS impact
FreeBSD Affected 10 releases
| Version | Status | Fixed in |
|---|---|---|
| 8.1-prerelease | Affected | — |
| 8.0 | Affected | — |
| 7.2 | Affected | — |
| 7.1 | Affected | — |
| 7.0-release | Affected | — |
| 7.0_releng | Affected | — |
| 7.0_beta4 | Affected | — |
| 7.0 | Affected | — |
| 6.4 | Affected | — |
| 6 | Affected | — |
References
- http://blog.pi3.com.pl/?p=111
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=584932
- http://secunia.com/advisories/39963
- http://secunia.com/advisories/39966
- http://secunia.com/advisories/45136
- http://security.FreeBSD.org/advisories/FreeBSD-SA-10:05.opie.asc
- http://securityreason.com/achievement_securityalert/87
- http://securityreason.com/securityalert/7450
- http://securitytracker.com/id?1024040
- http://securitytracker.com/id?1025709
- http://site.pi3.com.pl/adv/libopie-adv.txt
- http://www.debian.org/security/2011/dsa-2281
- http://www.exploit-db.com/exploits/12762
- http://www.securityfocus.com/bid/40403
- http://blog.pi3.com.pl/?p=111
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=584932
- http://secunia.com/advisories/39963
- http://secunia.com/advisories/39966
- http://secunia.com/advisories/45136
- http://security.FreeBSD.org/advisories/FreeBSD-SA-10:05.opie.asc
- http://securityreason.com/achievement_securityalert/87
- http://securityreason.com/securityalert/7450
- http://securitytracker.com/id?1024040
- http://securitytracker.com/id?1025709
- http://site.pi3.com.pl/adv/libopie-adv.txt
CWEs
CWE-189
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.