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USN-3964-1: python-gnupg vulnerabilities

2 May 2019

Several security issues were fixed in python-gnupg




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.

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.

Update instructions

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

Ubuntu 19.04
Ubuntu 18.10
Ubuntu 18.04

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

Related notices

  • USN-3675-3: gnupg
  • USN-3675-2: gpgv-udeb, gnupg2, dirmngr, gpgv2, gnupg-agent, scdaemon, gpgsm
  • USN-3675-1: gnupg2, gnupg, gpgv2, gpgconf, gnupg-curl, gpgsm, gpg-wks-client, gnupg-utils, gpg-agent, gpgv-udeb, gnupg-agent, gnupg-udeb, scdaemon, gnupg-l10n, gpgv-static, dirmngr, gpg-wks-server, gpgv, gpg, gpgv-win32