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HTTP Request Smuggling Affecting tomcat9 package, versions <9.0.43-2

Severity

 Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    10.89% (96th percentile)

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  • Snyk ID SNYK-DEBIAN12-TOMCAT9-1561827
  • published 13 Jul 2021
  • disclosed 12 Jul 2021
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Introduced: 12 Jul 2021

CVE-2021-33037 Open this link in a new tab
CWE-444 Open this link in a new tab

How to fix?

Upgrade Debian:12 tomcat9 to version 9.0.43-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat9 package and not the tomcat9 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.

References

CVSS Scores

version 3.1
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NVD

Recommended
5.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    None
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SUSE

4.3 medium
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Red Hat

4.3 medium