UBUNTU-CVE-2022-45061

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    UBUNTU-CVE-2022-45061

    Published: 9 Nov 2022Last Modified: 8 Sept 2026
    Upstream:
    CVE-2022-45061
    Aliases:
    USN-5767-1
    USN-5767-2
    USN-5888-1

    Summary:

    Details: An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname. For example, the attack payload could be placed in the Location header of an HTTP response with status code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16.

    References: https://ubuntu.com/security/CVE-2022-45061, https://github.com/python/cpython/pull/99092, https://github.com/python/cpython/pull/99230, https://github.com/python/cpython/pull/99231, https://ubuntu.com/security/notices/USN-5767-1, https://ubuntu.com/security/notices/USN-5767-2, https://ubuntu.com/security/notices/USN-5888-1, https://www.cve.org/CVERecord?id=CVE-2022-45061, https://ubuntu.com/security/notices/USN-6891-1, https://ubuntu.com/security/notices/USN-7212-1

    Affected packages

    Package

    Name: python2.7

    Purl: pkg:deb/ubuntu/python2.7?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.7.6-8ubuntu0.6+esm13

    Affected versions

    2.7.5-8ubuntu3
    2.7.5-8ubuntu4
    2.7.6-2
    2.7.6-2ubuntu1
    2.7.6-3
    2.7.6-3ubuntu1
    2.7.6-4
    2.7.6-4ubuntu1
    2.7.6-5
    2.7.6-7
    2.7.6-8
    2.7.6-8ubuntu0.2
    2.7.6-8ubuntu0.3
    2.7.6-8ubuntu0.4
    2.7.6-8ubuntu0.5
    2.7.6-8ubuntu0.6+esm2
    2.7.6-8ubuntu0.6+esm3
    2.7.6-8ubuntu0.6+esm5
    2.7.6-8ubuntu0.6+esm6
    2.7.6-8ubuntu0.6+esm7
    2.7.6-8ubuntu0.6+esm8
    2.7.6-8ubuntu0.6+esm9
    2.7.6-8ubuntu0.6+esm10
    2.7.6-8ubuntu0.6+esm11
    2.7.6-8ubuntu0.6+esm12

    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-2022-45061 | CVE-DB