Description
GnuPG 2.2.4 and 2.2.5 does not enforce a configuration in which key certification requires an offline master Certify key, which results in apparently valid certifications that occurred only with access to a signing subkey.
References (2)
Core 2
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://dev.gnupg.org/T3844
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3675-1/
Scores
CVSS v3
7.5
EPSS
0.0017
EPSS Percentile
38.0%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-320
Status
published
Products (6)
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
17.10
canonical/ubuntu_linux
18.04
gnupg/gnupg
2.2.4
gnupg/gnupg
2.2.5
Published
Apr 04, 2018
Tracked Since
Feb 18, 2026