USN-4247-3: python-apt vulnerabilities

Releases

• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• 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
machine-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

• python-apt - 0.9.3.5ubuntu3+esm2
• python3-apt - 0.9.3.5ubuntu3+esm2

Ubuntu 12.04

• python-apt - 0.8.3ubuntu7.5
• python3-apt - 0.8.3ubuntu7.5

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

References

• CVE-2019-15795
• CVE-2019-15796

Related notices

• USN-4247-1: python-apt-common, python3-apt, python-apt-dev, python-apt, python-apt-doc