CVE-2011-2512

Sažetak

The virtio_queue_notify in qemu-kvm 0.14.0 and earlier does not properly validate the virtqueue number, which allows guest users to cause a denial of service (guest crash) and possibly execute arbitrary code via a negative number in the Queue Notify field of the Virtio Header, which bypasses a signed comparison.

Reference

http://secunia.com/advisories/45158
http://www.osvdb.org/74751
http://ubuntu.com/usn/usn-1165-1
http://rhn.redhat.com/errata/RHSA-2011-0919.html
http://www.openwall.com/lists/oss-security/2011/06/29/15
http://www.openwall.com/lists/oss-security/2011/06/28/13
https://hermes.opensuse.org/messages/9605323
http://secunia.com/advisories/45170
http://secunia.com/advisories/45301
http://secunia.com/advisories/44648
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00007.html
http://secunia.com/advisories/44458
https://www.debian.org/security/2011/dsa-2270
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commitdiff%3Bh=7157e2e23e89adcd436caeab31fdd6b47eded377

CVSS

Base:	5.8
Impact:	6.4
Exploitability:	6.5

Pristup

Vektor	Složenost	Autentikacija
ADJACENT_NETWORK	LOW	NONE

Impact

Povjerljivost	Cjelovitost	Dostupnost
PARTIAL	PARTIAL	PARTIAL

CVSS vektor

AV:A/AC:L/Au:N/C:P/I:P/A:P

Zadnje važnije ažuriranje

13-02-2023 - 01:19

Objavljeno

21-06-2012 - 15:55