CVE-2015-8381
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 5.29% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- pcre/perl compatible regular expression library
- Source
- cve@mitre.org
References
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markupExploit, Release Notes
- http://www.openwall.com/lists/oss-security/2015/11/29/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/76187Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bto.bluecoat.com/security-advisory/sa128Third Party Advisory
- https://bugs.exim.org/show_bug.cgi?id=1667Exploit
- https://bugs.exim.org/show_bug.cgi?id=1672Exploit
- 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=markupExploit, Release Notes
- http://www.openwall.com/lists/oss-security/2015/11/29/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/76187Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bto.bluecoat.com/security-advisory/sa128Third Party Advisory
- https://bugs.exim.org/show_bug.cgi?id=1667Exploit
- https://bugs.exim.org/show_bug.cgi?id=1672Exploit
- https://security.gentoo.org/glsa/201607-02
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.