UBUNTU-CVE-2021-34548

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-34548

    UBUNTU-CVE-2021-34548

    Published: 29 Jun 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-34548
    Aliases:
    USN-5036-1

    Summary:

    Details: An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for ending a stream.

    References: https://ubuntu.com/security/CVE-2021-34548, https://blog.torproject.org/node/2041, https://bugs.torproject.org/tpo/core/tor/40389, https://ubuntu.com/security/notices/USN-5036-1, https://www.cve.org/CVERecord?id=CVE-2021-34548

    Affected packages

    Package

    Name: tor

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.4.2.7-1ubuntu0.1~esm1

    Affected versions

    0.4.1.5-1
    0.4.1.5-1build1
    0.4.1.6-1
    0.4.2.5-1
    0.4.2.6-1
    0.4.2.7-1

    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
    UBUNTU-CVE-2021-34548 | CVE-DB