GHSA-9763-4f94-gfch

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    GHSA-9763-4f94-gfch

    Published: 8 Jan 2024Last Modified: 10 Sept 2026
    Aliases:
    GO-2024-2453

    Summary: CIRCL's Kyber: timing side-channel (kyberslash2)

    Details: ### Impact On some platforms, when an attacker can time decapsulation of Kyber on forged cipher texts, they could possibly learn (parts of) the secret key. Does not apply to ephemeral usage, such as when used in the regular way in TLS. ### Patches Patched in 1.3.7. ### References - [kyberslash.cr.yp.to](https://kyberslash.cr.yp.to/)

    References: https://github.com/cloudflare/circl/security/advisories/GHSA-9763-4f94-gfch, https://github.com/cloudflare/circl/commit/75ef91e8a2f438e6ce2b6e620d236add8be1887d, https://github.com/cloudflare/circl, https://kyberslash.cr.yp.to

    Affected packages

    Package

    Name: github.com/cloudflare/circl

    Purl: pkg:golang/github.com/cloudflare/circl

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.3.7

    Affected versions

    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
    GHSA-9763-4f94-gfch | CVE-DB