1. Ubuntu Security Notices
  2. USN-4720-1

USN-4720-1: Apport vulnerabilities

Publication date

2 February 2021

Overview

Several security issues were fixed in Apport.

Releases

Packages

  • apport - automatically generate crash reports for debugging

Details

Itai Greenhut discovered that Apport incorrectly parsed certain files in
the /proc filesystem. A local attacker could use this issue to escalate
privileges and run arbitrary code. (CVE-2021-25682, CVE-2021-25683)

Itai Greenhut discovered that Apport incorrectly handled opening certain
special files. A local attacker could possibly use this issue to cause
Apport to hang, resulting in a denial of service. (CVE-2021-25684)

Itai Greenhut discovered that Apport incorrectly parsed certain files in
the /proc filesystem. A local attacker could use this issue to escalate
privileges and run arbitrary code. (CVE-2021-25682, CVE-2021-25683)

Itai Greenhut discovered that Apport incorrectly handled opening certain
special files. A local attacker could possibly use this issue to cause
Apport to hang, resulting in a denial of service. (CVE-2021-25684)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.10 groovy apport –  2.20.11-0ubuntu50.5
python3-apport –  2.20.11-0ubuntu50.5
20.04 focal apport –  2.20.11-0ubuntu27.16
python3-apport –  2.20.11-0ubuntu27.16
18.04 bionic apport –  2.20.9-0ubuntu7.23
python-apport –  2.20.9-0ubuntu7.23
python3-apport –  2.20.9-0ubuntu7.23
16.04 xenial apport –  2.20.1-0ubuntu2.30
python-apport –  2.20.1-0ubuntu2.30
python3-apport –  2.20.1-0ubuntu2.30

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›