| Name | CVE-2020-1935 |
| Description | In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely. |
| 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-2133-1, DLA-2209-1, DSA-4673-1, DSA-4680-1, ELA-217-1 |
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 |
| stretch | 7.0.75-1 | vulnerable | |
| tomcat8 (PTS) | jessie, jessie (lts) | 8.0.14-1+deb8u27 | 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 (security), bullseye | 9.0.43-2~deb11u9 | 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 | wheezy | 7.0.28-4+deb7u24 | ELA-217-1 | ||
| tomcat7 | source | jessie | 7.0.56-3+really7.0.100-1 | DLA-2133-1 | ||
| tomcat7 | source | (unstable) | (unfixed) | |||
| tomcat8 | source | jessie | 8.0.14-1+deb8u17 | DLA-2209-1 | ||
| tomcat8 | source | stretch | 8.5.54-0+deb9u1 | DSA-4673-1 | ||
| tomcat8 | source | (unstable) | (unfixed) | |||
| tomcat9 | source | buster | 9.0.31-1~deb10u1 | DSA-4680-1 | ||
| tomcat9 | source | (unstable) | 9.0.31-1 |
[stretch] - tomcat7 <ignored> (No components in libservlet3.0-java binary package are affected)
https://github.com/apache/tomcat/commit/8bfb0ff7f25fe7555a5eb2f7984f73546c11aa26 (9.0.31)
https://github.com/apache/tomcat/commit/8fbe2e962f0ea138d92361921643fe5abe0c4f56 (8.5.51)
https://github.com/apache/tomcat/commit/702bf15bea292915684d931526d95d4990b2e73d (7.0.100)