Bug 1314676 (CVE-2016-2858) - CVE-2016-2858 Qemu: rng-random: arbitrary stack based allocation leading to corruption
Summary: CVE-2016-2858 Qemu: rng-random: arbitrary stack based allocation leading to c...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2016-2858
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1314677 1314678
Blocks: 1305286
TreeView+ depends on / blocked
 
Reported: 2016-03-04 08:43 UTC by Prasad Pandit
Modified: 2021-02-17 04:14 UTC (History)
37 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-08 02:49:21 UTC
Embargoed:

Attachments (Terms of Use)

Description Prasad Pandit 2016-03-04 08:43:12 UTC 
Qemu emulator built with the Pseudo Random Number Generator(PRNG) back-end
support is vulnerable to an arbitrary stack based allocation and memory
corruption via random bytes issue. It could occur when a guest requests for
entropy for random number generation.

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

Upstream patch:
---------------
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=60253ed1e6ec6d8e5ef2efe7bf755f475

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/03/04/1
Comment 1 Prasad Pandit 2016-03-04 08:44:41 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1314678]
Comment 2 Prasad Pandit 2016-03-04 08:44:59 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1314677]
Comment 3 Prasad Pandit 2016-03-04 08:48:12 UTC 
Statement:

This has been rated as having Low security impact and is not currently
planned to be addressed in future updates. For additional information, refer
to the Red Hat Enterprise Linux Life Cycle:
https://access.redhat.com/support/policy/updates/errata/.
Comment 5 Fedora Update System 2016-03-19 21:24:23 UTC 
xen-4.5.2-9.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2016-03-20 02:28:19 UTC 
xen-4.5.2-9.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2016-05-15 05:26:58 UTC 
qemu-2.4.1-9.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2016-05-20 23:49:12 UTC 
qemu-2.3.1-14.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Note You need to log in before you can comment on or make changes to this bug.