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CVE-2020-1935

Published: Feb 24, 2020Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDUCWE-444
NVD MITRE
4.8CVSSMEDIUM
EPSS Score
9.4%
Top 5.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-444

Affected Products

Apache TomcatApache
On-premWeb App
Networking Infrastructure / load-balancer-proxy
org.apache.tomcat.embed:tomcat-embed-coreMavenOSS Libraries
org.apache.tomcat:tomcatMavenOSS Libraries
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
Oracle Transportation ManagementOracle Corp.
On-prem
Databases / relational
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
mavenpackage-ecosystemOSS Libraries
canonical ltd.commercialGBOperating Systemsaka canonical
oracle corp.commercialUSDatabasesaka oracle
and 35 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org
https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html
lists.debian.org
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html
lists.opensuse.org
and 33 more references View all →

Timeline

Published
Feb 24, 2020
Last Updated
Nov 21, 2024

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