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CVE-2009-0783 is an insufficient isolation vulnerability in Apache Tomcat that permits a web application to replace an XML parser subsequently used while processing deployment descriptors for other web applications. A local user who can deploy a crafted application and cause it to load before a target application can use the substituted parser to read or modify the target application's web.xml, context.xml, or tag library descriptor files. Affected versions are Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local information-disclosure and file-modification vulnerability in Apache Tomcat caused by insufficient isolation of XML parsers between web applications. A crafted application loaded before a target application can replace its XML parser and read or alter configuration and tag-library descriptor files.
Information disclosure and modification risk from replaceable XML parsers.
XML parser replacement flaw permitting cross-web-application deployment descriptor disclosure or modification.
Information-disclosure and modification flaw arising from replacement of Tomcat's XML parser.
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.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.