USN-4247-3: python-apt vulnerabilities

USN-4247-3: python-apt vulnerabilities

python-apt vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 ESM
  • Ubuntu 12.04 ESM

Summary

Several security issues were fixed in python-apt.

Software Description

  • python-apt – Python interface to libapt-pkg

Details

USN-4247-1 fixed several vulnerabilities in python-apt. This update
provides the corresponding updates for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that python-apt would still use MD5 hashes to validate
certain downloaded packages. If a remote attacker were able to perform a
man-in-the-middle attack, this flaw could potentially be used to install
altered packages. (CVE-2019-15795)

It was discovered that python-apt could install packages from untrusted
repositories, contrary to expectations. (CVE-2019-15796)

Update instructions

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

Ubuntu 14.04 ESM
python-apt – 0.9.3.5ubuntu3+esm2
python3-apt – 0.9.3.5ubuntu3+esm2
Ubuntu 12.04 ESM
python-apt – 0.8.3ubuntu7.5
python3-apt – 0.8.3ubuntu7.5

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-4247-3: python-apt vulnerabilities

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