CVE-2021-41079GHSA-59G9-7GFX-C72PBIT-TOMCAT-2021-41079
Apache Tomcat DoS with unexpected TLS packet
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 8.5.64, 9.0.44, 10.0.3, 10.0.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or 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: yes
- Technical impact: partial
Summary
Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Apache Software Foundation Apache Tomcat
Apache Tomcat 8.5 8.5.0 to 8.5.63, Apache Tomcat 9 9.0.0-M1 to 9.0.43, Apache Tomcat 10 10.0.0-M1 to 10.0.2
- tomcatBitnami
From 8.5.0 · fixed in 8.5.64; From 9.0.0 · fixed in 9.0.44; From 10.0.0 · fixed in 10.0.3
- org.apache.tomcat:tomcatMaven
From 10.0.0 · fixed in 10.0.4
- org.apache.tomcat:tomcatMaven
From 9.0.0 · fixed in 9.0.44
- org.apache.tomcat:tomcatMaven
From 8.5.0 · fixed in 8.5.64