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    CVE-2023-6208

    When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

    Published:Nov 21, 2023
    Last Modified:Feb 13, 2025
    EPS:Nov 21, 2023
    EPSS Score:0.00481
    CVSS Score:8.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Firefox Esr
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

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    References

    https://bugzilla.mozilla.org/show_bug.cgi?id=1855345
    https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html
    https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
    https://www.debian.org/security/2023/dsa-5561
    https://www.mozilla.org/security/advisories/mfsa2023-49/
    https://www.mozilla.org/security/advisories/mfsa2023-50/
    https://www.mozilla.org/security/advisories/mfsa2023-52/
    https://bugzilla.mozilla.org/show_bug.cgi?id=1855345
    https://lists.debian.org/debian-lts-announce/2023/11/msg00017.html
    https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
    https://www.debian.org/security/2023/dsa-5561
    https://www.mozilla.org/security/advisories/mfsa2023-49/
    https://www.mozilla.org/security/advisories/mfsa2023-50/
    https://www.mozilla.org/security/advisories/mfsa2023-52/

    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