Re: CVE Request: pcre: Segmentation fault on certain input to regular expressions with nested alternatives when JIT is used

[Salvatore Bonaccorso <carnil () debian org>]

Hi,

On Sat, Mar 26, 2016 at 08:25:55AM +0100, Salvatore Bonaccorso wrote:
> Hi
>
> In Debian the following issue was reported (test case contained)
>
> https://bugs.debian.org/819050
>
>
> On certain input when processed for regular expressions with nested
> alternatives and JIT is used, pcre3 can segfault, affecting in this
> case suricata leading to at least a denial of service.
>
> The problem was addressed upstream with commit:
> http://vcs.pcre.org/pcre?view=revision&revision=1475
>
> Can you assign a CVE for this issue?

Additional information for this request: The issue seems to have been
introduced with http://vcs.pcre.org/pcre?view=revision&revision=1434
in 8.35.

Note that upstream of suricata tracks the issue in suricata in
conjunction with pcre 8.35 with
https://redmine.openinfosecfoundation.org/issues/1693
to issue a warning.

Regards,
Salvatore