Bug 570988 – <app-emulation/qemu-2.5.0-r1: net: ne2000: OOB memory access in ioport r/w functions (CVE-2015-8743)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2016-01-05 14:33:49 UTC]

From ${URL} :

Qemu emulator built with the NE2000 device emulation support is vulnerable to an
OOB r/w access issue. It could occur while performing 'ioport' r/w operations.

A privileged(CAP_SYS_RAWIO) user/process could use this flaw to leak or corrupt
Qemu memory bytes(3).

Upstream fix:
-------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00050.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/01/04/2


@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 SpanKY 2016-01-18 05:00:27 UTC]

fix is in qemu-2.5.0-r1 in the tree now

http://gitweb.gentoo.org/repo/gentoo.git/commit/?id=96bdea53ec5c2e6d80e30b288043e34bfc766e25

[Comment 2 Agostino Sarubbo 2016-01-26 15:03:04 UTC]

The stabilization happened in bug 571566

[Comment 3 GLSAMaker/CVETool Bot 2016-01-26 19:02:44 UTC]

CVE-2015-8743 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8743):
  An out-of-bounds read-write access flaw was found in the QEMU emulator built
  with NE2000-device emulation support. The flaw occurred while performing
  'ioport' read-write operations. A privileged (CAP_SYS_RAWIO) user or process
  could exploit the flaw to leak or corrupt QEMU memory bytes.

[Comment 4 Kristian Fiskerstrand (RETIRED) 2016-01-26 19:03:03 UTC]

Added to existing GLSA draft

[Comment 5 GLSAMaker/CVETool Bot 2016-02-04 09:35:24 UTC]

This issue was resolved and addressed in
 GLSA 201602-01 at https://security.gentoo.org/glsa/201602-01
by GLSA coordinator Kristian Fiskerstrand (K_F).