7.5
CWE
400
Advisory Published
CVE Published
Updated

CVE-2023-39321: Panic when processing post-handshake message on QUIC connections in crypto/tls

First published: Wed Sep 06 2023(Updated: )

Golang Go is vulnerable to a denial of service, caused by a flaw when processing partial post-handshake message in QUICConn.HandleData in the crypto/tls package. By sending a specially crafted post-handshake message for a QUIC connection, a remote attacker could exploit this vulnerability to cause a denial of service condition.

Credit: security@golang.org security@golang.org

Affected SoftwareAffected VersionHow to fix
Golang Go>=1.21.0<1.21.1
IBM Planning Analytics on Cloud Pak for Data<=4.0
redhat/golang<1.20.8
1.20.8
redhat/golang<1.21.1
1.21.1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-39321?

    CVE-2023-39321 is a vulnerability that causes a panic when processing an incomplete post-handshake message for a QUIC connection.

  • What is the severity of CVE-2023-39321?

    The severity of CVE-2023-39321 is high with a CVSS score of 7.5.

  • How does CVE-2023-39321 affect the software?

    CVE-2023-39321 affects Golang Go version 1.21.0 to 1.21.1.

  • How can I fix CVE-2023-39321?

    To fix CVE-2023-39321, update Golang Go to a version higher than 1.21.1.

  • Where can I find more information about CVE-2023-39321?

    You can refer to the following references for more information: [1] https://go.dev/cl/523039 [2] https://go.dev/issue/62266 [3] https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ

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