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Bug 576420 (CVE-2016-2858)

Summary: <app-emulation/qemu-2.5.0-r2: rng-random: arbitrary stack based allocation leading to corruption (CVE-2016-2858)
Product: Gentoo Security Reporter: Agostino Sarubbo <ago>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Status: RESOLVED FIXED    
Severity: minor CC: qemu+disabled
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
URL: https://bugzilla.redhat.com/show_bug.cgi?id=1314676
Whiteboard: B3 [glsa cve]
Package list:
Runtime testing required: ---
Bug Depends on: 578044    
Bug Blocks:    

Description Agostino Sarubbo gentoo-dev 2016-03-04 10:08:05 UTC
From ${URL} :

Qemu emulator built with the Pseudo Random Number Generator(PRNG) back-end
support is vulnerable to an arbitrary stack based allocation and memory
corruption via random bytes issue. It could occur when a guest requests for
entropy for random number generation.

A user/process inside guest could use this flaw to crash the Qemu process
resulting in DoS.

Upstream patch:
---------------
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956


@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 SpanKY gentoo-dev 2016-03-23 05:26:48 UTC
this is in qemu-2.5.0-r2 and is fine for stable
Comment 2 Aaron Bauman Gentoo Infrastructure gentoo-dev Security 2016-03-23 06:16:06 UTC
Added to existing GLSA.
Comment 3 Aaron Bauman Gentoo Infrastructure gentoo-dev Security 2016-03-24 11:53:07 UTC
@maintainer, please cleanup.  Thank you.
Comment 4 Aaron Bauman Gentoo Infrastructure gentoo-dev Security 2016-03-25 12:56:10 UTC
Cleanup complete.  Thanks all.
Comment 5 GLSAMaker/CVETool Bot gentoo-dev 2016-04-02 18:28:32 UTC
This issue was resolved and addressed in
 GLSA 201604-01 at https://security.gentoo.org/glsa/201604-01
by GLSA coordinator Yury German (BlueKnight).