Bug 1425939 (CVE-2017-2633) - CVE-2017-2633 Qemu: VNC: memory corruption due to unchecked resolution limit
Summary: CVE-2017-2633 Qemu: VNC: memory corruption due to unchecked resolution limit
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-2633
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:
Depends On: 1377977 1400438 1425943 1429798 1430616 1430617
Blocks: 1424988
TreeView+ depends on / blocked
 
Reported: 2017-02-22 19:57 UTC by Prasad J Pandit
Modified: 2019-09-29 14:07 UTC (History)
37 users (show)

Fixed In Version: qemu 1.7.2
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds memory access issue was found in Quick Emulator (QEMU) in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.
Clone Of:
Environment:
Last Closed: 2019-06-08 03:08:05 UTC


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:1205 normal SHIPPED_LIVE Important: qemu-kvm-rhev security update 2017-05-09 15:07:02 UTC
Red Hat Product Errata RHSA-2017:1206 normal SHIPPED_LIVE Important: qemu-kvm security update 2017-05-09 16:29:49 UTC
Red Hat Product Errata RHSA-2017:1441 normal SHIPPED_LIVE Important: qemu-kvm-rhev security and bug fix update 2017-06-14 19:20:20 UTC
Red Hat Product Errata RHSA-2017:1856 normal SHIPPED_LIVE Moderate: qemu-kvm security, bug fix, and enhancement update 2017-08-01 18:03:36 UTC

Description Prasad J Pandit 2017-02-22 19:57:47 UTC
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

Comment 8 errata-xmlrpc 2017-05-09 11:07:20 UTC
This issue has been addressed in the following products:

  RHEV 3.X Hypervisor and Agents for RHEL-6

Via RHSA-2017:1205 https://access.redhat.com/errata/RHSA-2017:1205

Comment 9 errata-xmlrpc 2017-05-09 12:46:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:1206 https://access.redhat.com/errata/RHSA-2017:1206

Comment 10 errata-xmlrpc 2017-06-14 15:32:56 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6

Via RHSA-2017:1441 https://access.redhat.com/errata/RHSA-2017:1441

Comment 11 errata-xmlrpc 2017-08-01 17:52:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1856 https://access.redhat.com/errata/RHSA-2017:1856


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