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Bug 610682 (CVE-2017-2633)

Summary: <app-emulation/qemu-2.1.0: VNC: memory corruption due to unchecked resolution limit
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=1425939
Whiteboard: B3 [ebuild]
Package list:
Runtime testing required: ---

Description Agostino Sarubbo gentoo-dev 2017-02-23 11:51:03 UTC
From ${URL} :

Quick Emulator(Qemu) built with the VNC display driver support is vulnerable
to an out-of-bounds memory access issue. It could occur while refreshing
the vnc display surface area in 'vnc_refresh_server_surface'.

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

Older versions of Qemu are affected, latest upstream releases are not.

Upstream patch:
---------------
  -> http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=bea60dd7679364493a0d7f5b54316c767cf894ef
  -> http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=9f64916da20eea67121d544698676295bbb105a7

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/02/23/1


@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 Matthias Maier gentoo-dev 2017-03-27 03:48:40 UTC
Older versions of Qemu are affected, latest upstream releases are not.

[...]

These are patches from 2012 and 2014 respectively. No ebuild since mid 2015 is affected.
Comment 2 Yury German Gentoo Infrastructure gentoo-dev 2017-03-28 04:13:52 UTC
thank you tamiko.
Closing!