CVE-2018-9234 Security feature bypass in n/a

What is CVE-2018-9234?

CVE-2018-9234 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 4 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-320

Which versions are affected by CVE-2018-9234?

It affects 2 products.

Products include Canonical Ubuntu Linux, Gnupg Gnupg.

How do I fix CVE-2018-9234?

Upgrade to a fixed version.

Is CVE-2018-9234 being exploited?

There is no known exploitation of CVE-2018-9234 in the wild and no public exploit code.

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
• How this page is made

Also known as DEBIAN-CVE-2018-9234, GHSA-mq99-p8pq-jp4q, MGASA-2018-0254, SUSE-SU-2023:3857-1, UBUNTU-CVE-2018-9234.