Is CVE-2018-9234 in the CISA KEV catalog?

No. CVE-2018-9234 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-9234?

CVE-2018-9234 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2018-9234?

CVE-2018-9234 has an EPSS score of 2.08% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-9234?

Upgrade gnupg2 on debian 11 to 2.2.7-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2018-9234

HIGHEPSS 79th pctl

7.5

CVSS v3

NVD

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.

CWE-320

How to fix

Remediation Available

gnupg2Debian

Fixed in:2.2.7-1CVE-2018-9234

gnupgUbuntu

Fixed in:1.4.16-1ubuntu2.5USN-3675-1

Fixed in:1.4.20-1ubuntu3.2USN-3675-1

Fixed in:2.2.4-1ubuntu1.1USN-3675-1

gnupg2Ubuntu

Fixed in:2.2.4-1ubuntu1.1USN-3675-1

gpgUbuntu

Fixed in:2.2.4-1ubuntu1.1USN-3675-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

2.08%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Third-Party Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.