UBUNTU-CVE-2023-27043

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    UBUNTU-CVE-2023-27043

    Published: 19 Apr 2023Last Modified: 8 Sept 2026
    Upstream:
    CVE-2023-27043
    Aliases:
    USN-7015-1
    USN-7015-3
    USN-7015-4

    Summary:

    Details: The email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character. The wrong portion of an RFC2822 header is identified as the value of the addr-spec. In some applications, an attacker can bypass a protection mechanism in which application access is granted only after verifying receipt of e-mail to a specific domain (e.g., only @company.example.com addresses may be used for signup). This occurs in email/_parseaddr.py in recent versions of Python.

    References: https://ubuntu.com/security/CVE-2023-27043, https://github.com/python/cpython/pull/102990, https://github.com/python/cpython/pull/105127, https://python-security.readthedocs.io/vuln/email-parseaddr-realname.html, https://www.cve.org/CVERecord?id=CVE-2023-27043, https://ubuntu.com/security/notices/USN-7015-1, https://ubuntu.com/security/notices/USN-7015-3, https://ubuntu.com/security/notices/USN-7015-4, https://ubuntu.com/security/notices/USN-7015-7

    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+esm20

    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
    2.7.6-8ubuntu0.6+esm13
    2.7.6-8ubuntu0.6+esm14
    2.7.6-8ubuntu0.6+esm15
    2.7.6-8ubuntu0.6+esm16
    2.7.6-8ubuntu0.6+esm17
    2.7.6-8ubuntu0.6+esm18

    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-2023-27043 | CVE-DB