| Name | 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. |
| 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-2286-1, DSA-4727-1, ELA-242-1, ELA-243-1 |
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+deb8u5 | fixed |
| 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 | 9.0.31-1~deb10u6 | fixed |
| buster (security) | 9.0.31-1~deb10u12 | fixed | |
| bullseye | 9.0.43-2~deb11u9 | fixed | |
| bullseye (security) | 9.0.43-2~deb11u10 | fixed | |
| sid, trixie, bookworm | 9.0.70-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| tomcat7 | source | jessie | 7.0.56-3+really7.0.100-1+deb8u2 | ELA-242-1 | ||
| tomcat8 | source | jessie | 8.0.14-1+deb8u18 | ELA-243-1 | ||
| tomcat8 | source | stretch | 8.5.54-0+deb9u3 | DLA-2286-1 | ||
| tomcat8 | source | (unstable) | (unfixed) | |||
| tomcat9 | source | buster | 9.0.31-1~deb10u2 | DSA-4727-1 | ||
| tomcat9 | source | (unstable) | 9.0.37-1 |
https://www.openwall.com/lists/oss-security/2020/07/14/3
https://github.com/apache/tomcat/commit/12d715676038efbf9c728af10163f8277fc019d5 (8.5.57)
https://github.com/apache/tomcat/commit/40fa74c74822711ab878079d0a69f7357926723d (9.0.37)