CVE-2019-6690

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-03-21 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

Canonical Ubuntu Linux: 18.04, 18.10, 19.04
Debian Linux: 8.0, 9.0
openSUSE Leap: 15.0
Python-Gnupg: 0.4.3
SUSE Backports: all versions

References

http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00058.html
http://packetstormsecurity.com/files/151341/Python-GnuPG-0.4.3-Improper-Input-Validation.html
http://www.securityfocus.com/bid/106756
https://blog.hackeriet.no/cve-2019-6690-python-gnupg-vulnerability/
https://lists.debian.org/debian-lts-announce/2019/02/msg00021.html
https://lists.debian.org/debian-lts-announce/2021/12/msg00027.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WMV6XNPPL3VB3RQRFFOBCJ3AGWC4K47/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6KYZMN2PWXY4ENZVJUVTGFBVYEVY7II/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X4VFRUG56542LTYK4444TPJBGR57MT25/
https://pypi.org/project/python-gnupg/#history
https://seclists.org/bugtraq/2019/Jan/41

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