CVE-2019-6690 Improper Input Validation python-gnupg

What is CVE-2019-6690?

CVE-2019-6690 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 17 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

python-gnupg 0.4.3 allows context-dependent attackers to trick gnupg to decrypt other ciphertext than intended. To perform the attack, the passphrase to gnupg must be controlled by the adversary and the ciphertext should be trusted. Related to a "CWE-20: Improper Input Validation" issue affecting the affect functionality component.

Weakness: CWE-20

Which versions are affected by CVE-2019-6690?

5 open source packages ship an affected version, including python-gnupg. It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Leap, Python Python-Gnupg, Suse Backports.

How do I fix CVE-2019-6690?

Upgrade python-gnupg to 0.4.4 or later.

Is CVE-2019-6690 being exploited?

There is no known exploitation of CVE-2019-6690 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-6690, DLA-1675-1, GHSA-2fch-jvg5-crf6, GHSA-qh62-ch95-63wh, MGASA-2019-0105, PYSEC-2019-115 and 3 more.