CVE-2018-5121

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    CVE-2018-5121

    Published: 11 Jun 2018Last Modified: 10 Mar 2026

    Summary:

    Details: Low descenders on some Tibetan characters in several fonts on OS X are clipped when rendered in the addressbar. When used as part of an Internationalized Domain Name (IDN) this can be used for domain name spoofing attacks. Note: This attack only affects OS X operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 58.

    References: , https://www.mozilla.org/security/advisories/mfsa2018-02/, http://www.securityfocus.com/bid/102786, http://www.securitytracker.com/id/1040270, https://bugzilla.mozilla.org/show_bug.cgi?id=1402368

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    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