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Fencer Intel
medium 5.0

CVE-2011-1659 json

Integer overflow in posix/fnmatch.c in the GNU C Library (aka glibc or libc6) 2.13 and earlier allows context-dependent attackers to cause…

published 2011-04-08 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1659

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

Integer overflow in posix/fnmatch.c in the GNU C Library (aka glibc or libc6) 2.13 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a long UTF8 string that is used in an fnmatch call with a crafted pattern argument, a different vulnerability than CVE-2011-1071.

Patch / fix

  • glibc Debian 14, Debian 13, Debian 12 2.13-8

debian advisories DEBIAN-CVE-2011-1659

  • glibc RHEL 4 2.3.4-2.57
  • nscd RHEL 4 2.3.4-2.57
  • glibc-utils RHEL 4 2.3.4-2.57
  • glibc-common RHEL 4 2.3.4-2.57
  • glibc-profile RHEL 4 2.3.4-2.57
  • glibc-debuginfo-common RHEL 4 2.3.4-2.57
  • glibc RHEL 6 2.12-1.7.el6_0.5
  • nscd RHEL 6 2.12-1.7.el6_0.5

red hat advisories RHSA-2012:0125RHSA-2011:0413RHSA-2011:0412

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-1659 updated cvss 5.1

glibc: fnmatch() alloca()-based memory corruption flaw

  • Red Hat Enterprise Linux (v. 5.6.z server) nscd 2.5-58.el5_6.2, glibc 2.5-58.el5_6.2, glibc-utils 2.5-58.el5_6.2, glibc-common 2.5-58.el5_6.2, glibc-debuginfo-common 2.5-58.el5_6.2
    fixed: vendor fix RHSA-2011:0412
  • Red Hat Enterprise Linux AS version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57
    fixed: vendor fix RHSA-2012:0125
  • Red Hat Enterprise Linux Desktop (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5 Red Hat Enterprise Linux Desktop Optional (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5
    fixed: vendor fix RHSA-2011:0413
  • Red Hat Enterprise Linux Desktop version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57 Red Hat Enterprise Linux ES version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57
    fixed: vendor fix RHSA-2012:0125
  • Red Hat Enterprise Linux HPC Node (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5 Red Hat Enterprise Linux HPC Node Optional (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5 Red Hat Enterprise Linux Server (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5 Red Hat Enterprise Linux Server Optional (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5 Red Hat Enterprise Linux Workstation (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5 Red Hat Enterprise Linux Workstation Optional (v. 6) nscd 2.12-1.7.el6_0.5, glibc 2.12-1.7.el6_0.5, glibc-utils 2.12-1.7.el6_0.5, glibc-common 2.12-1.7.el6_0.5
    fixed: vendor fix RHSA-2011:0413
  • Red Hat Enterprise Linux WS version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57
    fixed: vendor fix RHSA-2012:0125

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.86% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=681054 referenced PoC, tagged "exploit" by a source, unverified
  • sourceware.org http://sourceware.org/bugzilla/show_bug.cgi?id=12583 referenced PoC, tagged "exploit" by a source, unverified
  • scarybeastsecurity.blogspot.com http://scarybeastsecurity.blogspot.com/2011/02/i-got-accidental-code-execution-via.html referenced PoC, tagged "exploit" by a source, unverified
  • code.google.com http://code.google.com/p/chromium/issues/detail?id=48733 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.