USN-5821-4: pip regression

Releases

• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• python-pip - Python package installer

Details

USN-5821-3 fixed a vulnerability in pip. The update introduced
a minor regression in Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and
Ubuntu 18.04 LTS. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Sebastian Chnelik discovered that wheel incorrectly handled
certain file names when validated against a regex expression.
An attacker could possibly use this issue to cause a
denial of service.

Update instructions

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

Ubuntu 18.04

• python-pip - 9.0.1-2.3~ubuntu1.18.04.8
• python-pip-whl - 9.0.1-2.3~ubuntu1.18.04.8
• python3-pip - 9.0.1-2.3~ubuntu1.18.04.8

Ubuntu 16.04

• python-pip - 8.1.1-2ubuntu0.6+esm5
  Available with Ubuntu Pro
• python-pip-whl - 8.1.1-2ubuntu0.6+esm5
  Available with Ubuntu Pro
• python3-pip - 8.1.1-2ubuntu0.6+esm5
  Available with Ubuntu Pro

Ubuntu 14.04

• python-pip - 1.5.4-1ubuntu4+esm4
  Available with Ubuntu Pro
• python-pip-whl - 1.5.4-1ubuntu4+esm4
  Available with Ubuntu Pro
• python3-pip - 1.5.4-1ubuntu4+esm4
  Available with Ubuntu Pro

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

References

• https://launchpad.net/bugs/2009130