USN-4898-1

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    USN-4898-1

    Published: 31 Mar 2021Last Modified: 22 Apr 2026

    Summary: curl vulnerabilities

    Details: Viktor Szakats discovered that curl did not strip off user credentials from referrer header fields. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2021-22876) Mingtao Yang discovered that curl incorrectly handled session tickets when using an HTTPS proxy. A remote attacker in control of an HTTPS proxy could use this issue to bypass certificate checks and intercept communications. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2021-22890)

    References: https://ubuntu.com/security/notices/USN-4898-1, https://ubuntu.com/security/CVE-2021-22876, https://ubuntu.com/security/CVE-2021-22890

    Affected packages

    Package

    Name: curl

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7.47.0-1ubuntu2.19

    Affected versions

    7.43.0-1ubuntu2

    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
    USN-4898-1 | CVE-DB