1. Ubuntu Security Notices
  2. USN-4707-1

USN-4707-1: TCMU vulnerability

Publication date

28 January 2021

Overview

tcmu could be made to crash if it received specially crafted input.

Releases

Packages

  • tcmu - TCM-Userspace backend

Details

It was discovered that TCMU lacked a check for transport-layer restrictions,
allowing remote attackers to read or write files via directory traversal in
an XCOPY request.

It was discovered that TCMU lacked a check for transport-layer restrictions,
allowing remote attackers to read or write files via directory traversal in
an XCOPY request.

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 libtcmu2 –  1.5.2-5ubuntu0.20.10.1
tcmu-runner –  1.5.2-5ubuntu0.20.10.1
20.04 focal libtcmu2 –  1.5.2-5ubuntu0.20.04.1
tcmu-runner –  1.5.2-5ubuntu0.20.04.1

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References

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