CVE-2020-13934GHSA-VF77-8H7G-GGHPBIT-TOMCAT-2020-13934
An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 proces
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 8.5.57, 9.0.37, 10.0.0-M6, 9.0.36, 8.5.56
- 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
An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- n/a Apache Tomcat
Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36, 8.5.1 to 8.5.56
- tomcatBitnami
From 8.5.1 · fixed in 8.5.57; From 9.0.1 · fixed in 9.0.37
- org.apache.tomcat:tomcatMaven
From 10.0.0-M1 · fixed in 10.0.0-M6
- org.apache.tomcat:tomcatMaven
From 9.0.0.M5 · fixed in 9.0.36
- org.apache.tomcat:tomcatMaven
From 8.5.1 · fixed in 8.5.56
- org.apache.tomcat:tomcat-coyoteMaven
From 10.0.0-M1 · fixed in 10.0.0-M6
- org.apache.tomcat:tomcat-coyoteMaven
From 9.0.0.M5 · fixed in 9.0.36
- org.apache.tomcat:tomcat-coyoteMaven
From 8.5.1 · fixed in 8.5.56