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CVE-2009-3555

CRITICAL

Apache Tomcat affected by vulnerability in TLS and SSL protocol

Published May 2, 2022Updated June 9, 2026Source: osv

Summary

The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l, GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS) 3.12.4 and earlier, multiple Cisco products, and other products, does not properly associate renegotiation handshakes with an existing connection, which allows man-in-the-middle attackers to insert data into HTTPS sessions, and possibly other types of sessions protected by TLS or SSL, by sending an unauthenticated request that is processed retroactively by a server in a post-renegotiation context, related to a "plaintext injection" attack, aka the "Project Mogul" issue. Apache Tomcat was affected by this issue and introduced a workaround in versions 7.0.10, 6.0.32, and 5.5.33.

Remediation

Upgrade to the fixed version using your package manager.

Maven
Update org.apache.tomcat:tomcat to 5.5.33 or later
<!-- Update pom.xml dependency version to 5.5.33 for org.apache.tomcat:tomcat -->
Maven
Update org.apache.tomcat:tomcat to 6.0.32 or later
<!-- Update pom.xml dependency version to 6.0.32 for org.apache.tomcat:tomcat -->
Maven
Update org.apache.tomcat:tomcat to 7.0.10 or later
<!-- Update pom.xml dependency version to 7.0.10 for org.apache.tomcat:tomcat -->

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

PackageEcosystemAffectedFixed In
org.apache.tomcat:tomcat
maven
All versions5.5.33
org.apache.tomcat:tomcat
maven
All versions6.0.32
org.apache.tomcat:tomcat
maven
All versions7.0.10

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2009-3555?
Apache Tomcat affected by vulnerability in TLS and SSL protocol This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2009-3555?
CVE-2009-3555 affects org.apache.tomcat:tomcat. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2009-3555 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-f7w7-6pjc-wwm6

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