Arch Linux Security Advisory ASA-201510-13
=========================================
Severity: High
Date    : 2015-10-19
CVE-ID  : CVE-2015-3247 CVE-2015-5260 CVE-2015-5261
Package : spice
Type    : multiple issues
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package spice before version 0.12.6-1 is vulnerable to multiple
issues, including denial of service and privilege escalation.

Resolution
=========
Upgrade to 0.12.6-1.

# pacman -Syu "spice>=0.12.6-1"

The problem has been fixed upstream in version 0.12.6.

Workaround
=========
None.

Description
==========
- CVE-2015-3247 (race condition flaw):

A race condition flaw was found in spice's
worker_update_monitors_config() function, leading to a heap-based memory
corruption. A user in a guest could leverage this flaw to crash the host
QEMU-KVM process or, possibly, execute arbitrary code with the
privileges of the host QEMU-KVM process.

- CVE-2015-5260 (heap-based buffer overflow):

A heap-based buffer overflow flaw was found in the way spice handled
certain QXL commands related to the "surface_id" parameter. A user in a
guest could use this flaw to crash the host QEMU-KVM process or,
possibly, execute arbitrary code with the privileges of the host
QEMU-KVM process.

- CVE-2015-5261 (heap-based buffer overflow):

A heap-based buffer overflow flaw was found in the way SPICE handled
certain guest QXL commands related to surface creation. A user in a
guest could use this flaw to read and write arbitrary memory locations
on the host.

Impact
=====
A rogue guest user can cause a denial of service to the host or execute
arbitrary command with the privileges of the host QEMU-KVM process.

References
=========
https://bugs.archlinux.org/task/46738
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-3247
https://access.redhat.com/security/cve/CVE-2015-5260
https://access.redhat.com/security/cve/CVE-2015-5261
https://lists.freedesktop.org/archives/spice-devel/2015-October/022168.html