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Ubuntu 19.04 Security Notice USN-3964-1: python-gnupg Remote Attack

ubuntu
Calendar Grey May 2, 2019
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in python-gnupg

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)

Topics%20covered

Topics Covered

security advisory remote attack ubuntu python-gnupg command line issue passphrase leak

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

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

References

https://ubuntu.com/security/notices/USN-3964-1

CVE-2018-12020, CVE-2019-6690

Severity
critical
Lowest
Low
Medium
High
Critical

May 02, 2019

Topics%20covered

Topics Covered

security advisory remote attack ubuntu python-gnupg command line issue passphrase leak

Package Information

https://launchpad.net/ubuntu/+source/python-gnupg/0.4.3-1ubuntu1.19.04.1
https://launchpad.net/ubuntu/+source/python-gnupg/0.4.1-1ubuntu1.18.10.1
https://launchpad.net/ubuntu/+source/python-gnupg/0.4.1-1ubuntu1.18.04.1

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