CVE-2010-4051
Description
The regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (application crash) via a regular expression containing adjacent bounded repetitions that bypass the intended RE_DUP_MAX limitation, as demonstrated by a {10,}{10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD, related to a "RE_DUP_MAX overflow."
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
GNU libc/regcomp(3) - Multiple Vulnerabilities
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.19-4 |
| sid | Fixed | 2.19-4 |
| forky | Fixed | 2.19-4 |
| bullseye | Fixed | 2.19-4 |
| bookworm | Fixed | 2.19-4 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gnu | glibc | 1.00 | |
| gnu | glibc | 1.01 | |
| gnu | glibc | 1.02 | |
| gnu | glibc | 1.03 | |
| gnu | glibc | 1.04 | |
| gnu | glibc | 1.05 | |
| gnu | glibc | 1.06 | |
| gnu | glibc | 1.07 | |
| gnu | glibc | 1.08 | |
| gnu | glibc | 1.09 | |
| gnu | glibc | 1.09.1 | |
| gnu | glibc | 2.1 | |
| gnu | glibc | 2.1.1 | |
| gnu | glibc | 2.1.1.6 | |
| gnu | glibc | 2.1.2 | |
| gnu | glibc | 2.1.3 | |
| gnu | glibc | 2.1.3.10 | |
| gnu | glibc | 2.1.9 | |
| gnu | glibc | 2.10 | |
| gnu | glibc | 2.10.1 | |
| gnu | glibc | 2.10.2 | |
| gnu | glibc | 2.11 | |
| gnu | glibc | 2.11.1 | |
| gnu | glibc | 2.11.2 | |
| gnu | glibc | 2.11.3 | |
| gnu | glibc | 2.12.0 | |
| gnu | glibc | 2.12.1 | |
| gnu | glibc | 2.12.2 | |
References
- http://cxib.net/stuff/proftpd.gnu.c
- http://seclists.org/fulldisclosure/2011/Jan/78
- http://secunia.com/advisories/42547
- http://securityreason.com/achievement_securityalert/93
- http://securityreason.com/securityalert/8003
- http://securitytracker.com/id?1024832
- http://www.exploit-db.com/exploits/15935
- http://www.kb.cert.org/vuls/id/912279
- http://www.securityfocus.com/archive/1/515589/100/0/threaded
- http://www.securityfocus.com/bid/45233
- https://bugzilla.redhat.com/show_bug.cgi?id=645859
- https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apache.org%3E
- https://security-tracker.debian.org/tracker/CVE-2010-4051
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.