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CVE-2011-5063 is an improper authentication flaw in Apache Tomcat's HTTP Digest Access Authentication implementation. Tomcat fails to validate Digest realm values when processing authentication data. In deployments containing multiple protection spaces, an attacker can leverage a protection space with weaker authentication or authorization requirements to bypass intended access controls for another protected resource. Affected versions are Apache Tomcat 5.5.x before 5.5.34, 6.x before 6.0.33, and 7.x before 7.0.12. This issue is distinct from CVE-2011-1184.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An access-control bypass vulnerability in Apache Tomcat's HTTP Digest Access Authentication implementation. Failure to validate realm values may allow remote attackers to bypass intended restrictions by using a protection space with weaker authentication or authorization requirements.
A JBoss Web HTTP DIGEST authentication weakness that can permit attacks such as session replay.
One of several JBoss Web HTTP DIGEST authentication flaws that weakens the authentication implementation and can enable session replay attacks.
A flaw in JBoss Web's HTTP DIGEST authentication implementation that weakened its security properties and enabled risks including session replay.
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.