CVE-2011-1776

MEDIUM

Description

The is_gpt_valid function in fs/partitions/efi.c in the Linux kernel before 2.6.39 does not check the size of an Extensible Firmware Interface (EFI) GUID Partition Table (GPT) entry, which allows physically proximate attackers to cause a denial of service (heap-based buffer overflow and OOPS) or obtain sensitive information from kernel heap memory by connecting a crafted GPT storage device, a different vulnerability than CVE-2011-1577.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fa039d5f6b126fbd65eefa05db2f67e44df8f121

http://openwall.com/lists/oss-security/2011/05/10/4

http://rhn.redhat.com/errata/RHSA-2011-0927.html

http://securityreason.com/securityalert/8369

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39

http://www.pre-cert.de/advisories/PRE-SA-2011-04.txt

http://www.securityfocus.com/bid/47796

https://bugzilla.redhat.com/show_bug.cgi?id=703026

Details

Source: MITRE

Published: 2011-09-06

Updated: 2014-01-14

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 5.6

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

Impact Score: 7.8

Exploitability Score: 3.9

Severity: MEDIUM