Bug 570694 – <dev-libs/libpcre-8.38-r1: Heap Overflow Vulnerability (CVE-2016-1283)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2016-01-03 09:48:58 UTC]

From ${URL} :

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. Carefully crafted my lead to code execution in the context
of affected applications.

Reference:
https://bugs.exim.org/show_bug.cgi?id=1767



@maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.

[Comment 1 Agostino Sarubbo 2016-02-04 17:05:01 UTC]

*** Bug 573842 has been marked as a duplicate of this bug. ***

[Comment 2 SpanKY 2016-04-02 20:51:53 UTC]

added upstream patches; should be fined to stable:
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=cee01d4f06b3984b8211bd3c27358f7d18cf90fb

[Comment 3 GLSAMaker/CVETool Bot 2016-06-20 10:24:59 UTC]

CVE-2016-1283 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1283):
  The pcre_compile2 function in pcre_compile.c in PCRE 8.38 mishandles the
  /((?:F?+(?:^(?(R)a+\"){99}-))(?J)(?'R'(?'R'<((?'RR'(?'R'\){97)?J)?J)(?'R'(?'R'\){99|(:(?|(?'R')(\k'R')|((?'R')))H'R'R)(H'R))))))/
  pattern and related patterns with named subgroups, 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.

[Comment 4 Aaron Bauman (RETIRED) 2016-06-20 10:33:38 UTC]

Added to existing GLSA.

[Comment 5 GLSAMaker/CVETool Bot 2016-07-09 02:12:06 UTC]

This issue was resolved and addressed in
 GLSA 201607-02 at https://security.gentoo.org/glsa/201607-02
by GLSA coordinator Aaron Bauman (b-man).