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Apache Tomcat improperly handles chunk extensions in HTTP chunked transfer coding. Apache Tomcat 6.x releases before 6.0.37 and 7.x releases before 7.0.30 are affected. A remote attacker can stream chunked data containing chunk extensions to drive excessive resource consumption and deny service. The original remediation was later determined to be incomplete for related chunk-extension and trailing-header cases, which were addressed by CVE-2013-4322.
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An incomplete fix for an Apache Tomcat chunked-transfer-coding parsing denial-of-service issue. Unlimited chunk extensions and trailing-header whitespace could allow a remote attacker to cause denial of service by streaming data.
An Apache Tomcat chunked-transfer-coding denial-of-service issue whose prior fix was incomplete; unbounded chunk extensions and trailing-header whitespace could permit remote denial of service via streamed data.
A prior vulnerability whose incomplete fix led to CVE-2013-4322. No further technical details are provided in this content.
A remote denial-of-service vulnerability in Apache Tomcat's handling of chunk extensions in HTTP chunked transfer coding. An attacker can stream data with chunk extensions to exhaust resources or otherwise cause denial of service.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.