Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE) library before…
Priority LOW 37CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Partial · Partial · 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
Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to execute arbitrary code via a singleton Unicode sequence in a character class in a regex pattern, which is incorrectly optimized.
Why it matters now
EPSS 0.04097 90th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
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 1 advisory
- RHSA-2007:1126 Released 2007-12-18 · Red Hat rating Criticalflash-plugin security update
- Red Hat Desktop version 3 Extras flash-plugin-9.0.115.0-1.el3.with.oss.i386
- Red Hat Desktop version 4 Extras flash-plugin-9.0.115.0-1.el4.i386
- Red Hat Enterprise Linux AS version 3 Extras flash-plugin-9.0.115.0-1.el3.with.oss.i386
- Red Hat Enterprise Linux AS version 4 Extras flash-plugin-9.0.115.0-1.el4.i386
- Red Hat Enterprise Linux Desktop Supplementary (v. 5) flash-plugin-9.0.115.0-1.el5.i386
- Red Hat Enterprise Linux ES version 3 Extras flash-plugin-9.0.115.0-1.el3.with.oss.i386
- Red Hat Enterprise Linux ES version 4 Extras flash-plugin-9.0.115.0-1.el4.i386
- Red Hat Enterprise Linux Server Supplementary (v. 5) flash-plugin-9.0.115.0-1.el5.i386
- Red Hat Enterprise Linux WS version 3 Extras flash-plugin-9.0.115.0-1.el3.with.oss.i386
- Red Hat Enterprise Linux WS version 4 Extras flash-plugin-9.0.115.0-1.el4.i386
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 Extras | Fixed | RHSA-2007:1126 |
| Red Hat Desktop version 4 Extras | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux AS version 3 Extras | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux AS version 4 Extras | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux Desktop Supplementary (v. 5) | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux ES version 3 Extras | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux ES version 4 Extras | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux Server Supplementary (v. 5) | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux WS version 3 Extras | Fixed | RHSA-2007:1126 |
| Red Hat Enterprise Linux WS version 4 Extras | Fixed | RHSA-2007:1126 |
Timeline
- 2026-10-02 Threatist record created from CVE-2007-4768
- 2026-10-03 Alias added: GHSA-jq5c-rgv9-cw8p
References
Advisory 19
Other 15
- oval:org.mitre.oval:def:9701
- ADV-2007-4238
- http://www.adobe.com/support/security/bulletins/apsb08-13.html
- ADV-2008-1966
- ADV-2008-1724
- https://issues.rpath.com/browse/RPL-1738
- ADV-2008-0924
- [gtk-devel-list] 20071107 GLib 2.14.3
- http://docs.info.apple.com/article.html?artnum=307179
- ADV-2007-3790
- ADV-2007-3725
- ADV-2007-4258
- http://docs.info.apple.com/article.html?artnum=307562
- http://bugs.gentoo.org/show_bug.cgi?id=198976
- http://www.adobe.com/support/security/bulletins/apsb07-20.html
More Pcre vulnerabilities
- TI-2017-11950 In PCRE 8.41, after compiling, a pcretest load test PoC produces a crash overflow in the… CVSS 3.1MEDIUM 5.5
- TI-2015-02839 Heap-based buffer overflow in PCRE 8.34 through 8.37 and PCRE2 10.10 allows remote… CVSS 3.1CRITICAL 9.8
- TI-2016-02677 The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c… CVSS 3.0CRITICAL 9.8
- TI-2016-01176 The pcre_compile2 function in pcre_compile.c in PCRE 8.38 mishandles the… CVSS 3.1CRITICAL 9.8
- TI-2015-06911 The pcre_compile function in pcre_compile.c in PCRE before 8.38 mishandles certain [… CVSS 3.1CRITICAL 9.8
- TI-2015-04255 Heap-based buffer overflow in the find_fixedlength function in pcre_compile.c in PCRE… CVSS 3.0CRITICAL 9.1
Sources
- CVE-2007-4768 · CVE Program
- CVE-2007-4768 · NVD
- FIRST EPSS
- GHSA-jq5c-rgv9-cw8p · GitHub Advisory Database · CC BY 4.0
- CVE-2007-4768 · Red Hat security data · CC BY 4.0
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