What’s Vulnerable › Vulnerabilities

CVE-2015-8381

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2015-12-02 · updated 2026-06-17
• Weakness: CWE-119

Description

The compile_regex function in pcre_compile.c in PCRE before 8.38 and pcre2_compile.c in PCRE2 before 10.2x mishandles the /(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R'))))/ and /(?J:(?|(:(?|(?'R')(\z(?|(?'R')(\k'R')|((?'R')))k'R')|((?'R')))H'Ak'Rf)|s(?'R')))/ patterns, and related patterns with certain group references, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Affected products

• PCRE Perl Compatible Regular Expression Library: through 8.37

References

• http://rhn.redhat.com/errata/RHSA-2016-2750.html
• http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
• http://www.openwall.com/lists/oss-security/2015/11/29/1
• http://www.securityfocus.com/bid/76187
• https://access.redhat.com/errata/RHSA-2016:1132
• https://bto.bluecoat.com/security-advisory/sa128
• https://bugs.exim.org/show_bug.cgi?id=1667
• https://bugs.exim.org/show_bug.cgi?id=1672
• https://security.gentoo.org/glsa/201607-02
• http://rhn.redhat.com/errata/RHSA-2016-2750.html
• http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
• http://www.openwall.com/lists/oss-security/2015/11/29/1

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