UBUNTU-CVE-2017-7781

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    UBUNTU-CVE-2017-7781

    Published: 10 Aug 2017Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-7781
    Aliases:
    USN-3391-1

    Summary:

    Details: An error occurs in the elliptic curve point addition algorithm that uses mixed Jacobian-affine coordinates where it can yield a result "POINT_AT_INFINITY" when it should not. A man-in-the-middle attacker could use this to interfere with a connection, resulting in an attacked party computing an incorrect shared secret. This vulnerability affects Firefox < 55.

    References: https://ubuntu.com/security/CVE-2017-7781, https://ubuntu.com/security/notices/USN-3391-1, https://www.cve.org/CVERecord?id=CVE-2017-7781

    Affected packages

    Package

    Name: firefox

    Purl: pkg:deb/ubuntu/[email protected]+build2-0ubuntu0.14.04.2?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -55.0.1+build2-0ubuntu0.14.04.2

    Affected versions

    24.0+build1-0ubuntu1

    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