Scientific Linux Security Update : qemu-kvm on SL6.x i386/x86_64

This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

A heap-based buffer overflow flaw was discovered in the way QEMU's AMD
PC- Net II Ethernet Controller emulation received certain packets in
loopback mode. A privileged user (with the CAP_SYS_RAWIO capability)
inside a guest could use this flaw to crash the host QEMU process
(resulting in denial of service) or, potentially, execute arbitrary
code with privileges of the host QEMU process. (CVE-2015-7504)

A buffer overflow flaw was found in the way QEMU's AMD PC-Net II
emulation validated certain received packets from a remote host in
non-loopback mode. A remote, unprivileged attacker could potentially
use this flaw to execute arbitrary code on the host with the
privileges of the QEMU process. Note that to exploit this flaw, the
guest network interface must have a large MTU limit. (CVE-2015-7512)

After installing this update, shut down all running virtual machines.
Once all virtual machines have shut down, start them again for this
update to take effect.

See also :

http://www.nessus.org/u?4d302272

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 87639 ()

Bugtraq ID:

CVE ID: CVE-2015-7504
CVE-2015-7512

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