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Bug 1336429 - (CVE-2016-4454) CVE-2016-4454 Qemu: display: vmsvga: out-of-bounds read in vmsvga_fifo_read_raw() routine
CVE-2016-4454 Qemu: display: vmsvga: out-of-bounds read in vmsvga_fifo_read_r...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20160530,repor...
: Security
: 1329189 (view as bug list)
Depends On: 1340740 1340741
Blocks: 1329196 1336467
  Show dependency treegraph
 
Reported: 2016-05-16 08:54 EDT by Andrej Nemec
Modified: 2018-11-05 17:44 EST (History)
38 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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.
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Crash report (1.45 KB, text/plain)
2016-05-16 08:56 EDT, Andrej Nemec
no flags Details

  None (edit)
Description Andrej Nemec 2016-05-16 08:54:11 EDT
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:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg05271.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2016/05/30/3
Comment 1 Andrej Nemec 2016-05-16 08:54:54 EDT
Acknowledgments:

Name: Li Qiang (Qihoo 360), Qinghao Tang (Qihoo 360)
Comment 2 Andrej Nemec 2016-05-16 08:56 EDT
Created attachment 1157905 [details]
Crash report
Comment 5 Prasad J Pandit 2016-05-30 04:40:18 EDT
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1340741]
Comment 6 Prasad J Pandit 2016-05-30 04:40:35 EDT
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1340740]
Comment 7 Adam Mariš 2016-06-01 09:51:20 EDT
*** Bug 1329189 has been marked as a duplicate of this bug. ***
Comment 8 Fedora Update System 2016-06-17 11:57:38 EDT
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 14:44:17 EDT
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 15:25:16 EDT
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 15:24:40 EDT
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 15:29:58 EDT
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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