CVE-2023-39322: vulnerability in Go standard library crypto/tls
Memory exhaustion in QUIC connection handling in crypto/tls
Published · Updated
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3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 1.3%
QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With fix, connections now consistently reject messages larger than 65KiB in size.
Affected products
Go standard library · crypto/tlsRelated CVEs — Go standard library crypto/tls
In the same product, most dangerous first.
CVE-2023-29409—Large RSA keys can cause high CPU usage in crypto/tlsEPSS 1.6%CVE-2023-39321—Panic when processing post-handshake message on QUIC connections in crypto/tlsEPSS 1.3%CVE-2023-45287—Before Go 1.20, the RSA based key exchange methods in crypto/tls may exhibit a timing side channelEPSS 1.3%CVE-2022-30629LOWSession tickets lack random ticket_age_add in crypto/tlsEPSS 1.2%CVE-2022-41724—Panic on large handshake records in crypto/tlsEPSS 1.1%CVE-2025-68121CRITICALUnexpected session resumption in crypto/tlsEPSS 0.9%