CVE-2020-1935
Published: 24 February 2020
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | backport to 8.0 available in 8.0.14-1+deb8u17 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
tomcat9 Launchpad, Ubuntu, Debian |
upstream |
Released
(9.0.31-1)
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| bionic |
Needs triage
|
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Not vulnerable
(9.0.31-1)
|
|
| impish |
Not vulnerable
(9.0.31-1)
|
|
| groovy |
Not vulnerable
(9.0.31-1)
|
|
| hirsute |
Not vulnerable
(9.0.31-1)
|
|
| jammy |
Not vulnerable
(9.0.31-1)
|
|
| kinetic |
Not vulnerable
(9.0.31-1)
|
|
| lunar |
Not vulnerable
(9.0.31-1)
|
|
|
Patches: upstream: https://github.com/apache/tomcat/commit/8bfb0ff7f25fe7555a5eb2f7984f73546c11aa26 (9.0.31) |
||
|
tomcat8 Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
| impish |
Does not exist
|
|
| groovy |
Does not exist
|
|
| xenial |
Released
(8.0.32-1ubuntu1.13)
|
|
| hirsute |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| bionic |
Needs triage
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| lunar |
Does not exist
|
|
| trusty |
Does not exist
|
|
|
Patches: upstream: https://github.com/apache/tomcat/commit/8fbe2e962f0ea138d92361921643fe5abe0c4f56 (8.5.51) |
||
|
tomcat7 Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
| trusty |
Needs triage
|
|
| bionic |
Needs triage
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| impish |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| xenial |
Needs triage
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
|
Patches: upstream: https://github.com/apache/tomcat/commit/702bf15bea292915684d931526d95d4990b2e73d (7.0.100) |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.8 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |