616482 – (CVE-2017-7718) <app-emulation/qemu-2.8.1-r2: display: cirrus: OOB read access issue

Bug 616482 (CVE-2017-7718) - <app-emulation/qemu-2.8.1-r2: display: cirrus: OOB read access issue

Summary: <app-emulation/qemu-2.8.1-r2: display: cirrus: OOB read access issue

Status:	RESOLVED FIXED

Alias:	CVE-2017-7718

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal minor
Assignee:	Gentoo Security

URL:	https://bugzilla.redhat.com/show_bug....
Whiteboard:	B3 [glsa cve]
Keywords:

Depends on:	CVE-2017-8086
Blocks:
	Show dependency tree

Reported:	2017-04-24 11:51 UTC by Agostino Sarubbo
Modified:	2017-06-06 06:49 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Agostino Sarubbo gentoo-dev

2017-04-24 11:51:05 UTC

From ${URL} :

Quick emulator(Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is
vulnerable to an out-of-bounds access issue. It could occur while copying
VGA data via bitblt functions cirrus_bitblt_rop_fwd_transp_ and/or
cirrus_bitblt_rop_fwd_.

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

Upstream patch
--------------
  -> http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=215902d7b6fb50c6fc216fc74f770858278ed904

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/04/19/4


@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

2017-04-25 13:53:14 UTC

commit 51d94aaeff0e35fa68711f5623c5e6f68be2fac8
Author: Matthias Maier <tamiko@gentoo.org>
Date:   Tue Apr 25 08:32:43 2017 -0500

    app-emulation/qemu: security fixes
    
    CVE-2017-7471, bug #616484
    
    CVE-2017-7718, bug #616482
      already applied on stable-2.8 as 3328c14e63f08fb07e8c6dec779c9d365e9e9864
    
    CVE-2017-7980, bug #616462
      already applied on stable-2.8 as a290442234fa214fcb7f45fc91d802bcb8d05c4b
                                       031700e4527b9e05798f7040dccdf638da27aee2
    
    CVE-2017-8086, bug #616460
    
    Package-Manager: Portage-2.3.5, Repoman-2.3.2

Comment 2 GLSAMaker/CVETool Bot gentoo-dev

2017-06-06 06:49:36 UTC

This issue was resolved and addressed in
 GLSA 201706-03 at https://security.gentoo.org/glsa/201706-03
by GLSA coordinator Yury German (BlueKnight).