CVE-2023-46239

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    CVE-2023-46239

    Published: 31 Oct 2023Last Modified: 28 Oct 2026

    Summary: quic-go vulnerable to pointer dereference that can lead to panic

    Details: quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.

    References: https://github.com/quic-go/quic-go/releases/tag/v0.37.3, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/46xxx/CVE-2023-46239.json, https://github.com/quic-go/quic-go/security/advisories/GHSA-3q6m-v84f-6p9h, https://nvd.nist.gov/vuln/detail/CVE-2023-46239, https://github.com/quic-go/quic-go/commit/b6a4725b60f1fe04e8f1ddcc3114e290fcea1617

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 469a6153b6798780bf90e8be37f197d0fcb18af2
    Fixed -b6a4725b60f1fe04e8f1ddcc3114e290fcea1617

    Affected versions

    v0.37.2
    v0.37.1
    v0.37.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-46239 | CVE-DB