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%3Ba=commit%3Bh=fa039d5f6b126fbd65eefa05db2f67e44df8f121

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

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

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

http://securityreason.com/securityalert/8369

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

Details

Source: Mitre, NVD

Published: 2011-09-06

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Severity: Medium