Vulnerability CVE-2013-1798
Published: 2013-03-22

Description:
The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.

See advisories in our WLB2 database:
Topic
Author
Date
High
Linux Kernel kvm Multiple Vulns
Andrew Honig
20.03.2013

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:A/AC:H/Au:N/C:C/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.2/10
9.2/10
3.2/10
Exploit range
Attack complexity
Authentication
Adjacent network
High
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
None
Complete
Affected software
Linux -> Linux kernel 

 References:
https://github.com/torvalds/linux/commit/a2c118bfab8bc6b8bb213abfc35201e441693d55
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a2c118bfab8bc6b8bb213abfc35201e441693d55
https://bugzilla.redhat.com/show_bug.cgi?id=917017
http://www.ubuntu.com/usn/USN-1813-1
http://www.ubuntu.com/usn/USN-1812-1
http://www.ubuntu.com/usn/USN-1809-1
http://www.openwall.com/lists/oss-security/2013/03/20/9
http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
http://rhn.redhat.com/errata/RHSA-2013-1026.html
http://rhn.redhat.com/errata/RHSA-2013-0928.html
http://rhn.redhat.com/errata/RHSA-2013-0746.html
http://rhn.redhat.com/errata/RHSA-2013-0744.html
http://rhn.redhat.com/errata/RHSA-2013-0727.html
http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html
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