CVE-2020-9488GHSA-VWQQ-5VRC-XW9H
Improper validation of certificate with host mismatch in Apache Log4j SMTP appender.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.12.3, 2.13.2, 2.3.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 1 proof of concept on GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Apache Apache Log4j
From log4j-core · fixed in 2.12.3
- org.apache.logging.log4j:log4jMaven
From 2.13.0 · fixed in 2.13.2
- org.apache.logging.log4j:log4j-coreMaven
From 2.13.0 · fixed in 2.13.2
- org.apache.logging.log4j:log4jMaven
From 2.4.0 · fixed in 2.12.3
- org.apache.logging.log4j:log4jMaven
fixed in 2.3.2
- org.apache.logging.log4j:log4j-coreMaven
From 2.4.0 · fixed in 2.12.3
- org.apache.logging.log4j:log4j-coreMaven
fixed in 2.3.2
References 26
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