Re: CVE Request: PCRE Library Heap Overflow Vulnerability

[Guanxing Wen <wengx522 () gmail com>]

Hi Mitre,
Just a re-ping on this issue.

It has been fixed:
http://vcs.pcre.org/pcre/code/trunk/pcre_compile.c?r1=1584&r2=1585

Also the description for issue is listed in the changelog:
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?r1=1584&r2=1585


Wen Guanxing from Venustech ADLAB


2015-08-06 0:55 GMT+08:00 Guanxing Wen <wengx522 () gmail com>:

> PCRE is a regular expression C library inspired by the regular expression
> capabilities in the Perl programming language. The PCRE library is
> incorporated into a number of prominent programs, such as Adobe Flash,
> Apache, Nginx, PHP.
>
> PCRE library is prone to a vulnerability which leads to Heap Overflow.
> During the compilation of a malformed regular expression, more data is
> written on the malloced block than the expected size output by
> compile_regex. Exploits with advanced Heap Fengshui techniques may allow an
> attacker to execute arbitrary code in the context of the user running the
> affected application.
>
> Reference:
> https://bugs.exim.org/show_bug.cgi?id=1667
>
> Could you assign a CVE-ID for this?
>
> Thank you && Regards.
>
> Wen Guanxing from Venustech ADLAB