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CVE-2023-39321 is a denial-of-service vulnerability in Go's crypto/tls implementation for QUIC connections. Processing an incomplete TLS post-handshake message can trigger a panic. QUICConn.HandleData buffers received data and forwards complete messages to post-handshake-message handling; the affected handling can crash, exit, or restart the application when malformed partial handshake data is processed.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
39 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability included in the referenced Alma Linux 9.2 local security-check advisory; the supplied content does not describe the vulnerability's technical impact.
A Go crypto/tls flaw that can trigger a panic while processing a post-handshake message on QUIC connections.
A Go crypto/tls vulnerability that can cause a panic while processing post-handshake messages on QUIC connections.
A Go crypto/tls vulnerability that can cause a panic while processing a post-handshake message on QUIC connections.
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.