| Name | CVE-2021-41079 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2764-1, DSA-4986-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| tomcat7 (PTS) | jessie, jessie (lts) | 7.0.56-3+really7.0.109-1+deb8u6 | fixed |
| stretch | 7.0.75-1 | vulnerable |
| tomcat8 (PTS) | jessie, jessie (lts) | 8.0.14-1+deb8u28 | fixed |
| stretch (security) | 8.5.54-0+deb9u8 | fixed |
| stretch (lts), stretch | 8.5.54-0+deb9u15 | fixed |
| tomcat9 (PTS) | buster (security), buster, buster (lts) | 9.0.31-1~deb10u12 | fixed |
| bullseye (security), bullseye | 9.0.43-2~deb11u10 | fixed |
| bookworm | 9.0.70-2 | fixed |
| sid, trixie | 9.0.95-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E
https://github.com/apache/tomcat/commit/d4b340fa8feaf55831f9a59350578f7b6ca048b8 (9.0.44)
https://github.com/apache/tomcat/commit/b90d4fc1ff44f30e4b3aba622ba6677e3f003822 (8.5.64)
[jessie] - tomcat7 <not-affected> (The vulnerable code is not present)
[jessie] - tomcat8 <not-affected> (The vulnerable code is not present)