CVE-2013-0228

MEDIUM

Description

The xen_iret function in arch/x86/xen/xen-asm_32.S in the Linux kernel before 3.7.9 on 32-bit Xen paravirt_ops platforms does not properly handle an invalid value in the DS segment register, which allows guest OS users to gain guest OS privileges via a crafted application.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=13d2b4d11d69a92574a55bfd985cfb0ca77aebdc

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.9

http://www.mandriva.com/security/advisories?name=MDVSA-2013:176

http://www.openwall.com/lists/oss-security/2013/02/13/10

http://www.ubuntu.com/usn/USN-1795-1

http://www.ubuntu.com/usn/USN-1796-1

http://www.ubuntu.com/usn/USN-1797-1

http://www.ubuntu.com/usn/USN-1805-1

http://www.ubuntu.com/usn/USN-1808-1

https://bugzilla.redhat.com/show_bug.cgi?id=906309

https://github.com/torvalds/linux/commit/13d2b4d11d69a92574a55bfd985cfb0ca77aebdc

Details

Source: MITRE

Published: 2013-03-01

Updated: 2013-08-22

Type: CWE-189

Risk Information

CVSS v2.0

Base Score: 6.2

Vector: (AV:L/AC:H/Au:N/C:C/I:C/A:C)

Impact Score: 10

Exploitability Score: 1.9

Severity: MEDIUM