Ubuntu update for Apport

1) Path traversal

EUVDB-ID: #VU7570

Risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-10708

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to improper input validation in Apport when processing .crash files. A remote attacker can create a specially crafted .crash file, trick the victim into opening it and execute arbitrary code on the target system with privileges of the current user.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected packages.

Ubuntu 17.04:

apport 2.20.4-0ubuntu4.5

python-apport 2.20.4-0ubuntu4.5

python3-apport 2.20.4-0ubuntu4.5

Ubuntu 16.10:

apport 2.20.3-0ubuntu8.7

python-apport 2.20.3-0ubuntu8.7

python3-apport 2.20.3-0ubuntu8.7

Ubuntu 16.04 LTS:

apport 2.20.1-0ubuntu2.10

python-apport 2.20.1-0ubuntu2.10

python3-apport 2.20.1-0ubuntu2.10

Ubuntu 14.04 LTS:

apport 2.14.1-0ubuntu3.25

python-apport 2.14.1-0ubuntu3.25

python3-apport 2.14.1-0ubuntu3.25

Vulnerable software versions

Ubuntu: 14.04 - 17.04

CPE2.3

• cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:16.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:17.04:*:*:*:*:*:*:*

External links

https://www.ubuntu.com/usn/usn-3354-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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