UBUNTU-CVE-2015-8381

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UBUNTU-CVE-2015-8381

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2015-8381, http://www.openwall.com/lists/oss-security/2015/08/24/1, http://www.openwall.com/lists/oss-security/2015/08/05/3, http://www.openwall.com/lists/oss-security/2015/11/29/1, http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup, https://ubuntu.com/security/notices/USN-2943-1, https://www.cve.org/CVERecord?id=CVE-2015-8381