CVE-2018-9234: canonical ubuntu_linux Key Management Errors
CVSS: 7.5v3.0HighModified
AliasesMGASA-2018-0254SUSE-SU-2023:3857-1UBUNTU-CVE-2018-9234DEBIAN-CVE-2018-9234
Published 04-04-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-9234 is a high (CVSS 7.5) Key Management Errors vulnerability in canonical ubuntu_linux. EPSS estimates a 1.96% chance of exploitation in the next 30 days, higher than 79.9% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
1.96%
0%100%
Low · -0.05 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 04-04-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.96%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
-0.05 pp
From 2.01% on 19-09-2026
19-09-202619-10-2026
EPSS score1.96%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mageia2 products
- gnupg2< 2.0.27-1.1.mga5
- gnupg2< 2.1.21-3.mga6
Suse2 products
- gpg2&distro=SUSE Linux Enterprise Server 12 SP5< 2.0.24-9.14.1
- gpg2&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 2.0.24-9.14.1
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10 | 18.04
Debian1 product
- gnupg2< 2.2.7-1
Gnupg1 product
- gnupg2.2.4 | 2.2.5
Ubuntu1 product
- gnupg2< 2.2.4-1ubuntu1.1
6 vendors · 8 products
