UBUNTU-CVE-2018-7753

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    UBUNTU-CVE-2018-7753

    Published: 7 Mar 2018Last Modified: 9 Mar 2026
    Upstream:
    CVE-2018-7753
    Aliases:
    USN-8077-1

    Summary:

    Details: An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.

    References: https://ubuntu.com/security/CVE-2018-7753, https://github.com/mozilla/bleach/pull/356, https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef, https://bugs.debian.org/892252, https://github.com/mozilla/bleach/releases/tag/v2.1.3, https://www.cve.org/CVERecord?id=CVE-2018-7753, https://ubuntu.com/security/notices/USN-8077-1

    Affected packages

    Package

    Name: python-bleach

    Purl: pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.1.2-1ubuntu0.1~esm1

    Affected versions

    2.0-1

    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