USN-4171-5: Apport regression
apport regression
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
USN-4171-1 introduced a regression in Apport.
Software Description
- apport – automatically generate crash reports for debugging
Details
USN-4171-1 fixed vulnerabilities in Apport. This caused a regression in
autopkgtest and python2 compatibility. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Kevin Backhouse discovered Apport would read its user-controlled settings
file as the root user. This could be used by a local attacker to possibly
crash Apport or have other unspecified consequences. (CVE-2019-11481)
Sander Bos discovered a race-condition in Apport during core dump
creation. This could be used by a local attacker to generate a crash report
for a privileged process that is readable by an unprivileged user.
(CVE-2019-11482)
Sander Bos discovered Apport mishandled crash dumps originating from
containers. This could be used by a local attacker to generate a crash
report for a privileged process that is readable by an unprivileged user.
(CVE-2019-11483)
Sander Bos discovered Apport mishandled lock-file creation. This could be
used by a local attacker to cause a denial of service against Apport.
(CVE-2019-11485)
Kevin Backhouse discovered Apport read various process-specific files with
elevated privileges during crash dump generation. This could could be used
by a local attacker to generate a crash report for a privileged process
that is readable by an unprivileged user. (CVE-2019-15790)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.10
- apport – 2.20.11-0ubuntu8.6
- python-apport – 2.20.11-0ubuntu8.6
- python3-apport – 2.20.11-0ubuntu8.6
- Ubuntu 18.04 LTS
- apport – 2.20.9-0ubuntu7.12
- python-apport – 2.20.9-0ubuntu7.12
- python3-apport – 2.20.9-0ubuntu7.12
- Ubuntu 16.04 LTS
- apport – 2.20.1-0ubuntu2.22
- python-apport – 2.20.1-0ubuntu2.22
- python3-apport – 2.20.1-0ubuntu2.22
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-4171-5: Apport regression
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