Buffer overflow in the extend_buffers function in the regular expression matcher…
Priority LOW 28CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
Buffer overflow in the extend_buffers function in the regular expression matcher (posix/regexec.c) in glibc, possibly 2.17 and earlier, allows context-dependent attackers to cause a denial of service (memory corruption and crash) via crafted multibyte characters.
Why it matters now
EPSS 0.02851 86th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 2 advisories
- RHSA-2013:1605 Released 2013-11-20 · Red Hat rating Moderateglibc security, bug fix, and enhancement update
- Red Hat Enterprise Linux Desktop (v. 6) glibc-2.12-1.132.el6, glibc-common-2.12-1.132.el6, glibc-devel-2.12-1.132.el6 +3
- Red Hat Enterprise Linux Desktop Optional (v. 6) glibc-2.12-1.132.el6, glibc-static-2.12-1.132.el6
- Red Hat Enterprise Linux HPC Node (v. 6) glibc-2.12-1.132.el6, glibc-common-2.12-1.132.el6, glibc-devel-2.12-1.132.el6 +3
- Red Hat Enterprise Linux HPC Node Optional (v. 6) glibc-2.12-1.132.el6, glibc-static-2.12-1.132.el6
- Red Hat Enterprise Linux Server (v. 6) glibc-2.12-1.132.el6, glibc-2.12-1.132.el6.ppc, glibc-common-2.12-1.132.el6 +5
- Red Hat Enterprise Linux Server Optional (v. 6) glibc-2.12-1.132.el6, glibc-static-2.12-1.132.el6, glibc-static-2.12-1.132.el6.ppc
- Red Hat Enterprise Linux Workstation (v. 6) glibc-2.12-1.132.el6, glibc-common-2.12-1.132.el6, glibc-devel-2.12-1.132.el6 +3
- Red Hat Enterprise Linux Workstation Optional (v. 6) glibc-2.12-1.132.el6, glibc-static-2.12-1.132.el6
- RHSA-2013:0769 Released 2013-04-24 · Red Hat rating Lowglibc security and bug fix update
- Red Hat Enterprise Linux (v. 5 server) glibc-2.5-107.el5_9.4, glibc-2.5-107.el5_9.4.i386, glibc-2.5-107.el5_9.4.ia64 +21
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2013:0769 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2013:1605 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2013:1605 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2013:1605 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2013:1605 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2013:1605 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2013:1605 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2013:1605 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2013:1605 |
Timeline
- 2026-10-02 Threatist record created from CVE-2013-0242
- 2026-10-03 Alias added: GHSA-f776-wjgx-67c8
References
More GNU Glibc vulnerabilities
- TI-2023-04522 Glibc: buffer overflow in ld.so leading to privilege escalation KEVCVSS 3.1HIGH 7.8
- TI-2015-00205 Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and… CVSS 2.0HIGH 10.0
- TI-2026-04772 scanf %mc off-by-one heap buffer overflow CVSS 3.1CRITICAL 9.8
- TI-2022-07360 The deprecated compatibility function clnt_create in the sunrpc module of the GNU C… CVSS 3.1CRITICAL 9.8
- TI-2022-07359 The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C… CVSS 3.1CRITICAL 9.8
- TI-2015-06274 Multiple stack-based buffer overflows in the (1) send_dg and (2) send_vc functions in the… CVSS 3.0HIGH 8.1
Sources
- CVE-2013-0242 · CVE Program
- CVE-2013-0242 · NVD
- FIRST EPSS
- GHSA-f776-wjgx-67c8 · GitHub Advisory Database · CC BY 4.0
- CVE-2013-0242 · Red Hat security data · CC BY 4.0
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