Ubuntu update for util-linux

1) Memory leak

EUVDB-ID: #VU64464

Risk: Low

CVSSv3.1: 4 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-5011

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows an attacker with physical access to perform DoS attack on the target system.

The vulnerability exists due memory leak in the parse_dos_extended function in partitions/dos.c in the libblkid library in util-linux. An attacker with physical USB access can perform denial of service attack via a crafted MSDOS partition table with an extended partition boot record at zero offset.

Mitigation

Update the affected package util-linux to the latest version.

Vulnerable software versions

Ubuntu: 16.04

libblkid1 (Ubuntu package): before 2.27.16u buntu3.10+esm2

util-linux (Ubuntu package): before 2.27.16u buntu3.10+esm2

External links

http://ubuntu.com/security/notices/USN-5478-1

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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