#VU22531 UNIX symbolic link following in apport (Ubuntu package)


Published: 2019-11-05

Vulnerability identifier: #VU22531

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11483

CWE-ID: CWE-61

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
apport (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor: Canonical Ltd.

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to the Apport mishandles crash dumps originating from containers. A local user can trigger a crush dump for a controlled container and force the Apport to generate a report for a privileged process.

Mitigation
Update the affected packages.

Ubuntu 19.10
apport - 2.20.11-0ubuntu8.2
python-apport - 2.20.11-0ubuntu8.2
python3-apport - 2.20.11-0ubuntu8.2
Ubuntu 19.04
apport - 2.20.10-0ubuntu27.3
python-apport - 2.20.10-0ubuntu27.3
python3-apport - 2.20.10-0ubuntu27.3
Ubuntu 18.04 LTS
apport - 2.20.9-0ubuntu7.9
python-apport - 2.20.9-0ubuntu7.9
python3-apport - 2.20.9-0ubuntu7.9
Ubuntu 16.04 LTS
apport - 2.20.1-0ubuntu2.21
python-apport - 2.20.1-0ubuntu2.21
python3-apport - 2.20.1-0ubuntu2.21

Vulnerable software versions

apport (Ubuntu package): 2.20.0 - 2.20.11-0ubuntu8.1


External links
http://usn.ubuntu.com/4171-3/


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.


Latest bulletins with this vulnerability