Input validation error in Linux kernel

1) Input validation error

EUVDB-ID: #VU42230

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-6367

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The apic_get_tmcct function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via crafted modifications of the TMICT value.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.0 - 3.12.4

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:3.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:3.0.9:*:*:*:*:*:*:*

External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b963a22e6d1a266a67e9eecc88134713fd54775c
https://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
https://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
https://lists.opensuse.org/opensuse-updates/2014-02/msg00045.html
https://rhn.redhat.com/errata/RHSA-2013-1801.html
https://rhn.redhat.com/errata/RHSA-2014-0163.html
https://rhn.redhat.com/errata/RHSA-2014-0284.html
https://www.openwall.com/lists/oss-security/2013/12/12/12
https://www.securityfocus.com/bid/64270
https://www.ubuntu.com/usn/USN-2109-1
https://www.ubuntu.com/usn/USN-2110-1
https://www.ubuntu.com/usn/USN-2113-1
https://www.ubuntu.com/usn/USN-2117-1
https://www.ubuntu.com/usn/USN-2128-1
https://www.ubuntu.com/usn/USN-2129-1
https://www.ubuntu.com/usn/USN-2135-1
https://www.ubuntu.com/usn/USN-2136-1
https://www.ubuntu.com/usn/USN-2138-1
https://www.ubuntu.com/usn/USN-2139-1
https://www.ubuntu.com/usn/USN-2141-1
https://bugzilla.redhat.com/show_bug.cgi?id=1032207
https://github.com/torvalds/linux/commit/b963a22e6d1a266a67e9eecc88134713fd54775c
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.54

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.