CVE-2020-13935
HIGH7.5EPSS 92.2%Infinite Loop in Apache Tomcat
Published: 2/8/2022Modified: 4/28/2026
Also known as:DEBIAN-CVE-2020-13935
Description
The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.
Affected packages (3)
- Bitnami/tomcat>= 7.0.27, < 7.0.105, >= 8.5.0, < 8.5.57, >= 9.0.1, < 9.0.37
- Debian/tomcat9from 0, < 9.0.37-1
- Maven/org.apache.tomcat:tomcat>= 10.0.0-M1, < 10.0.0-M7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (33)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-13935
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-13935
- PATCHhttps://github.com/apache/tomcat
- WEBhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html
- WEBhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html
- WEBhttps://github.com/apache/tomcat/commit/12d715676038efbf9c728af10163f8277fc019d5
- WEBhttps://github.com/apache/tomcat/commit/1c1c77b0efb667cea80b532440b44cea1dc427c3
- WEBhttps://github.com/apache/tomcat/commit/40fa74c74822711ab878079d0a69f7357926723d
- WEBhttps://github.com/apache/tomcat/commit/4c04982870d6e730c38e21e58fb653b7cf723784
- WEBhttps://github.com/apache/tomcat/commit/f9f75c14678b68633f79030ddf4ff827f014cc84
- WEBhttps://kc.mcafee.com/corporate/index?page=content&id=SB10332
- WEBhttps://lists.apache.org/thread.html/r4e5d3c09f4dd2923191e972408b40fb8b42dbff0bc7904d44b651e50@%3Cusers.tomcat.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/r4e5d3c09f4dd2923191e972408b40fb8b42dbff0bc7904d44b651e50%40%3Cusers.tomcat.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%40%3Cannounce.tomcat.apache.org%3E
- WEBhttps://lists.debian.org/debian-lts-announce/2020/07/msg00017.html
- WEBhttps://security.netapp.com/advisory/ntap-20200724-0003
- WEBhttps://security.netapp.com/advisory/ntap-20200724-0003/
- WEBhttps://tomcat.apache.org/security-10.html
- WEBhttps://tomcat.apache.org/security-7.html
- WEBhttps://tomcat.apache.org/security-8.html
- WEBhttps://tomcat.apache.org/security-9.html
- WEBhttps://usn.ubuntu.com/4448-1
- WEBhttps://usn.ubuntu.com/4448-1/
- WEBhttps://usn.ubuntu.com/4596-1
- WEBhttps://usn.ubuntu.com/4596-1/
- WEBhttps://www.debian.org/security/2020/dsa-4727
- WEBhttps://www.oracle.com/security-alerts/cpuApr2021.html
- WEBhttps://www.oracle.com/security-alerts/cpuapr2022.html
- WEBhttps://www.oracle.com/security-alerts/cpujan2021.html
- WEBhttps://www.oracle.com/security-alerts/cpujan2022.html
- WEBhttps://www.oracle.com//security-alerts/cpujul2021.html
- WEBhttps://www.oracle.com/security-alerts/cpuoct2020.html
- WEBhttps://www.oracle.com/security-alerts/cpuoct2021.html