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CVE-2024-1635 is an uncontrolled resource-consumption vulnerability in Undertow servers supporting the wildfly-http-client protocol. During an HTTP upgrade to remoting, if a client opens an HTTP connection and closes it immediately, a RemotingConnection closed by Remoting ServerConnectionOpenListener does not notify Undertow's outer connection layer. Consequently, WriteTimeoutStreamSinkConduit retains the connection through its timeout task, which is referenced by an XNIO WorkerThread. Repeated malformed connection lifecycles leak connection-associated objects, memory, and file descriptors.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown; the advisory lists this CVE but provides no vulnerability description.
An Undertow out-of-memory vulnerability that can occur after several closed connections using the wildfly-http-client protocol.
Undertow vulnerability that can cause an out-of-memory error after several closed connections using the WildFly HTTP client protocol.
Unknown; the advisory references this CVE but provides no vulnerability description.
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.