The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".
The product reads data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://bugs.exim.org/show_bug.cgi?id=1592 | issue tracking permissions required exploit third party advisory |
| http://lists.opensuse.org/opensuse-updates/2015-05/msg00014.html | third party advisory mailing list |
| https://www.pcre.org/original/changelog.txt | third party advisory release notes |
| https://fortiguard.com/zeroday/FG-VD-15-016 | third party advisory |