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Vulnerability record · CVE-2010-4051 · published 13 January 2011

CVE-2010-4051: Gnu glibc vulnerability

Gnu · Glibc

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."

5.0 CVSS 2.0 Medium EPSS 40% · top 1.4%
5.0CVSS 2.0 base score
40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
24References, 10 tagged exploit
16 Jun 2026Last modified by 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."

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://cxib.net/stuff/proftpd.gnu.c Patch
http://seclists.org/fulldisclosure/2011/Jan/78 Exploit
http://secunia.com/advisories/42547 Vendor Advisory
http://securityreason.com/achievement_securityalert/93 Exploit
http://securityreason.com/securityalert/8003 Exploit
http://securitytracker.com/id?1024832
http://www.exploit-db.com/exploits/15935
http://www.kb.cert.org/vuls/id/912279 US Government Resource
http://www.securityfocus.com/archive/1/515589/100/0/threaded
http://www.securityfocus.com/bid/45233 Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=645859 Exploit
https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apa
http://cxib.net/stuff/proftpd.gnu.c Patch
http://seclists.org/fulldisclosure/2011/Jan/78 Exploit
http://secunia.com/advisories/42547 Vendor Advisory
http://securityreason.com/achievement_securityalert/93 Exploit
http://securityreason.com/securityalert/8003 Exploit
http://securitytracker.com/id?1024832
http://www.exploit-db.com/exploits/15935
http://www.kb.cert.org/vuls/id/912279 US Government Resource
http://www.securityfocus.com/archive/1/515589/100/0/threaded
http://www.securityfocus.com/bid/45233 Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=645859 Exploit
https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apa

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2010-4051), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.