- Vulnerability/
- USN-3964-1
USN-3964-1: python-gnupg vulnerabilities
First published: Thu May 02 2019(Updated: )
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)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/python-gnupg | <0.4.3-1ubuntu1.19.04.1 | 0.4.3-1ubuntu1.19.04.1 |
| Ubuntu OpenSSH Client | =19.04 | |
| All of | ||
| ubuntu/python3-gnupg | <0.4.3-1ubuntu1.19.04.1 | 0.4.3-1ubuntu1.19.04.1 |
| Ubuntu OpenSSH Client | =19.04 | |
| All of | ||
| ubuntu/python-gnupg | <0.4.1-1ubuntu1.18.10.1 | 0.4.1-1ubuntu1.18.10.1 |
| Ubuntu OpenSSH Client | =18.10 | |
| All of | ||
| ubuntu/python3-gnupg | <0.4.1-1ubuntu1.18.10.1 | 0.4.1-1ubuntu1.18.10.1 |
| Ubuntu OpenSSH Client | =18.10 | |
| All of | ||
| ubuntu/python-gnupg | <0.4.1-1ubuntu1.18.04.1 | 0.4.1-1ubuntu1.18.04.1 |
| Ubuntu OpenSSH Client | =18.04 | |
| All of | ||
| ubuntu/python3-gnupg | <0.4.1-1ubuntu1.18.04.1 | 0.4.1-1ubuntu1.18.04.1 |
| Ubuntu OpenSSH Client | =18.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2018-12020
- https://ubuntu.com/security/CVE-2019-6690
- https://ubuntu.com/security/notices/USN-3675-3
- https://ubuntu.com/security/notices/USN-3675-2
- https://ubuntu.com/security/notices/USN-3675-1
- https://ubuntu.com/security/notices/USN-4839-1
- 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
- https://ubuntu.com/security/notices/USN-3964-1 (Advisory)
Frequently Asked Questions
What is the vulnerability ID of this advisory?
The vulnerability ID of this advisory is CVE-2018-12020.
What is the affected software?
The affected software is python-gnupg and python3-gnupg.
What is the severity of CVE-2018-12020?
The severity of CVE-2018-12020 is not specified in the advisory.
How can a remote attacker exploit CVE-2018-12020?
A remote attacker could use CVE-2018-12020 to spoof the output of GnuPG and cause unsigned e-mail to appear signed.
How can I fix this vulnerability?
To fix this vulnerability, update python-gnupg and python3-gnupg to version 0.4.3-1ubuntu1.19.04.1 (for Ubuntu 19.04), 0.4.1-1ubuntu1.18.10.1 (for Ubuntu 18.10), or 0.4.1-1ubuntu1.18.04.1 (for Ubuntu 18.04).
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