Bug 1336429 (CVE-2016-4454) - CVE-2016-4454 Qemu: display: vmsvga: out-of-bounds read in vmsvga_fifo_read_raw() routine
Summary: CVE-2016-4454 Qemu: display: vmsvga: out-of-bounds read in vmsvga_fifo_read_r...
Status: CLOSED WONTFIX
Alias: CVE-2016-4454
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20160530,repor...
Keywords: Security
: 1329189 (view as bug list)
Depends On: 1340740 1340741
Blocks: 1329196 1336467
TreeView+ depends on / blocked
 
Reported: 2016-05-16 12:54 UTC by Andrej Nemec
Modified: 2019-06-11 11:13 UTC (History)
37 users (show)

(edit)
Quick Emulator(Qemu) built with the VMware-SVGA "chipset" emulation support is vulnerable to an information disclosure issue. It could occur while processing VGA commands via its FIFO buffer. A privileged user inside guest could use this flaw to leak host memory bytes or crash the Qemu process resulting in DoS.
Clone Of:
(edit)
Last Closed: 2019-06-08 02:51:56 UTC


Attachments (Terms of Use)
Crash report (1.45 KB, text/plain)
2016-05-16 12:56 UTC, Andrej Nemec
no flags Details

Description Andrej Nemec 2016-05-16 12:54:11 UTC
Quick Emulator(Qemu) built with the VMware-SVGA "chipset" emulation support is vulnerable to an information disclosure issue. It could occur while processing VGA commands via its FIFO buffer.

A privileged user inside guest could use this flaw to leak host memory bytes or crash the Qemu process resulting in DoS.

Upstream fix:
-------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg05271.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/05/30/3

Comment 1 Andrej Nemec 2016-05-16 12:54:54 UTC
Acknowledgments:

Name: Li Qiang (Qihoo 360), Qinghao Tang (Qihoo 360)

Comment 2 Andrej Nemec 2016-05-16 12:56 UTC
Created attachment 1157905 [details]
Crash report

Comment 5 Prasad J Pandit 2016-05-30 08:40:18 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1340741]

Comment 6 Prasad J Pandit 2016-05-30 08:40:35 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1340740]

Comment 7 Adam Mariš 2016-06-01 13:51:20 UTC
*** Bug 1329189 has been marked as a duplicate of this bug. ***

Comment 8 Fedora Update System 2016-06-17 15:57:38 UTC
xen-4.5.3-8.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2016-06-18 18:44:17 UTC
xen-4.6.1-11.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2016-06-25 19:25:16 UTC
qemu-2.6.0-4.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 11 Fedora Update System 2016-07-02 19:24:40 UTC
qemu-2.3.1-16.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 12 Fedora Update System 2016-07-02 19:29:58 UTC
qemu-2.4.1-11.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.


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