USN-3964-1: python-gnupg vulnerabilities

USN-3964-1: python-gnupg vulnerabilities

python-gnupg vulnerabilities

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

• Ubuntu 19.04
• Ubuntu 18.10
• Ubuntu 18.04 LTS

Summary

Several security issues were fixed in python-gnupg

Software Description

• python-gnupg – Python wrapper for the GNU Privacy Guard

Details

Marcus Brinkmann discovered that GnuPG before 2.2.8 improperly handled certain
command line parameters. A remote attacker could use this to spoof the output of
GnuPG and cause unsigned e-mail to appear signed.
(CVE-2018-12020)

It was discovered that python-gnupg incorrectly handled the GPG passphrase. A
remote attacker could send a specially crafted passphrase that would allow them
to control the output of encryption and decryption operations.
(CVE-2019-6690)

Update instructions

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

Ubuntu 19.04

python-gnupg – 0.4.3-1ubuntu1.19.04.1

python3-gnupg – 0.4.3-1ubuntu1.19.04.1

Ubuntu 18.10

python-gnupg – 0.4.1-1ubuntu1.18.10.1

python3-gnupg – 0.4.1-1ubuntu1.18.10.1

Ubuntu 18.04 LTS

python-gnupg – 0.4.1-1ubuntu1.18.04.1

python3-gnupg – 0.4.1-1ubuntu1.18.04.1

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

• CVE-2018-12020
• CVE-2019-6690

Source: USN-3964-1: python-gnupg vulnerabilities