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githubGitHub Advisory DatabaseGHSA-5CW4-GGX9-36VG
HistoryMay 02, 2022 - 3:12 a.m.

Apache Tomcat Denial of Service via Malformed Request Headers

2022-05-0203:12:29
CWE-20
CWE-400
GitHub Advisory Database
github.com
8

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

6.7 Medium

AI Score

Confidence

High

0.01 Low

EPSS

Percentile

84.0%

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header.

Affected configurations

Vulners
Node
org.apache.tomcat\Matchtomcat
OR
org.apache.tomcat\Matchtomcat
OR
org.apache.tomcat\Matchtomcat

References

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

6.7 Medium

AI Score

Confidence

High

0.01 Low

EPSS

Percentile

84.0%