Vulnerability · Published Jul 14, 2020 · Assigned by apache
CVE-2020-13934
High 7.5
In plain English
A high-severity security flaw in Apache Tomcat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 64.1% (higher than 99.2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)64.1%top 0.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | tomcat9 | 9.0.37-1 | DEBIAN-CVE-2020-13934 |
| Debian:13 | tomcat9 | 9.0.37-1 | DEBIAN-CVE-2020-13934 |
| Debian:14 | tomcat9 | 9.0.37-1 | DEBIAN-CVE-2020-13934 |
| Maven | org.apache.tomcat:tomcat | 10.0.0-M6 | GHSA-vf77-8h7g-gghp |
| Maven | org.apache.tomcat:tomcat | 9.0.36 | GHSA-vf77-8h7g-gghp |
| Maven | org.apache.tomcat:tomcat | 8.5.56 | GHSA-vf77-8h7g-gghp |
| Maven | org.apache.tomcat:tomcat-coyote | 8.5.56 | GHSA-vf77-8h7g-gghp |
| Maven | org.apache.tomcat:tomcat-coyote | 9.0.36 | GHSA-vf77-8h7g-gghp |
| Maven | org.apache.tomcat:tomcat-coyote | 10.0.0-M6 | GHSA-vf77-8h7g-gghp |
Affected products (as reported)
| Vendor | Product | 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 |
References
- https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E x_refsource_MISC
- DSA-4727 vendor-advisory, x_refsource_DEBIAN
- [debian-lts-announce] 20200722 [SECURITY] [DLA 2286-1] tomcat8 security update mailing-list, x_refsource_MLIST
- openSUSE-SU-2020:1102 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:1111 vendor-advisory, x_refsource_SUSE
- [tomcat-dev] 20200818 [Bug 64671] HTTP/2 Stream.receivedData method throwing continuous NullPointerException in the logs mailing-list, x_refsource_MLIST
- https://www.oracle.com/security-alerts/cpuoct2020.html x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20200724-0003/ x_refsource_CONFIRM
- USN-4596-1 vendor-advisory, x_refsource_UBUNTU
- https://www.oracle.com/security-alerts/cpujan2021.html x_refsource_MISC
- https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
- https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC