Bug 577928 – <dev-libs/expat-2.1.1-r2: Using XML_Parse before rand() results in non-random output (CVE-{2012-6702,2016-5300})

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2016-03-21 13:36:20 UTC]

From ${URL} :

It was found that when calling XML_Parse ahead of rand(), it causes the pseudo random generator to 
generate non-random predictable numbers.

Product bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1197087


@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 Sebastian Pipping 2016-06-13 14:35:45 UTC]

In Git now:
https://github.com/gentoo/gentoo/commit/04f12ff7fde845e4fc896786719fbd6a2e727666

Stabilize?

[Comment 2 Aaron Bauman (RETIRED) 2016-06-14 09:54:38 UTC]

@arches, please stabilize:

=dev-libs/expat-2.1.1-r2

[Comment 3 Tobias Klausmann (RETIRED) 2016-06-15 07:31:17 UTC]

Stable on alpha.

[Comment 4 Jeroen Roovers (RETIRED) 2016-06-15 15:38:19 UTC]

Stable for PPC64.

[Comment 5 Jeroen Roovers (RETIRED) 2016-06-21 11:33:19 UTC]

Stable for HPPA.

[Comment 6 Markus Meier 2016-06-21 18:30:23 UTC]

arm stable

[Comment 7 GLSAMaker/CVETool Bot 2016-06-22 03:30:34 UTC]

CVE-2016-5300 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-5300):
  The XML parser in Expat does not use sufficient entropy for hash
  initialization, which allows context-dependent attackers to cause a denial
  of service (CPU consumption) via crafted identifiers in an XML document. 
  NOTE: this vulnerability exists because of an incomplete fix for
  CVE-2012-0876.

[Comment 8 Agostino Sarubbo 2016-06-27 08:24:34 UTC]

amd64 stable

[Comment 9 Agostino Sarubbo 2016-06-27 08:49:15 UTC]

x86 stable.

Maintainer(s), please cleanup.

[Comment 10 Aaron Bauman (RETIRED) 2016-06-27 11:30:20 UTC]

Added to existing GLSA.

[Comment 11 GLSAMaker/CVETool Bot 2017-01-11 12:13:55 UTC]

This issue was resolved and addressed in
 GLSA 201701-21 at https://security.gentoo.org/glsa/201701-21
by GLSA coordinator Aaron Bauman (b-man).