Servers and applications
CVE-2010-4051
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…
- Severity
- Medium 5.0
- Published
- 13 Jan 2011
- Last changed
- 16 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 40% in the next 30 daysHigher than 98% of CVEs. EPSS by FIRST, 12 Nov 2026
- Attack
- Over the network · No login needed
- Attacker can
- Slow it down
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Sources
- NVD
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."
Affected software
| Software | Affected versions |
|---|---|
GNU C LibraryServers and applications · cpe:a:gnu:glibc |
All 28 release lines
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