Vulnerability identifier: #VU45092

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2011-1577

CWE-ID: CWE-122

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the is_gpt_valid function in fs/partitions/efi.c in the Linux kernel 2.6.38 and earlier. A remote attacker can use a crafted size of the EFI GUID partition-table header on removable media. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.38

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External links
http://downloads.avaya.com/css/P8/documents/100145416
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.html
http://openwall.com/lists/oss-security/2011/04/12/17
http://openwall.com/lists/oss-security/2011/04/13/1
http://rhn.redhat.com/errata/RHSA-2011-0833.html
http://securityreason.com/securityalert/8238
http://securitytracker.com/id?1025355
http://www.securityfocus.com/archive/1/517477/100/0/threaded
http://www.securityfocus.com/bid/47343
http://www.spinics.net/lists/mm-commits/msg83274.html
http://bugzilla.redhat.com/show_bug.cgi?id=695976
http://exchange.xforce.ibmcloud.com/vulnerabilities/66773

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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