The pcre_exec function in pcre_exec.c in PCRE before 8.38 mishandles a // pattern with a \01 string, 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.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2015/11/29/1 | exploit mailing list |
| https://bugs.exim.org/show_bug.cgi?id=1637 | exploit |
| https://blog.fuzzing-project.org/29-Heap-Overflow-in-PCRE.html | third party advisory |
| http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173700.html | third party advisory vendor advisory |
| http://www.securityfocus.com/bid/77695 | third party advisory vdb entry |
| https://bto.bluecoat.com/security-advisory/sa128 | third party advisory |
| http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup | exploit |
| https://security.gentoo.org/glsa/201607-02 | vendor advisory |