GHSA-232r-66cg-79px

    Dashboard / Vulnerabilities / GHSA-232r-66cg-79px

    GHSA-232r-66cg-79px

    Published: 12 Jul 2018Last Modified: 9 Jun 2026

    Summary: Paramiko not properly checking authentication before processing other requests

    Details: transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.

    References: https://nvd.nist.gov/vuln/detail/CVE-2018-7750, https://github.com/paramiko/paramiko/issues/1175, https://github.com/paramiko/paramiko/commit/fa29bd8446c8eab237f5187d28787727b4610516, https://github.com/paramiko/paramiko/commit/e9dfd854bdaf8af15d7834f7502a0451d217bb8c, https://www.exploit-db.com/exploits/45712, https://web.archive.org/web/20190831123128/http://www.securityfocus.com/bid/103713, https://usn.ubuntu.com/3603-2, https://usn.ubuntu.com/3603-1, https://lists.debian.org/debian-lts-announce/2021/12/msg00025.html, https://lists.debian.org/debian-lts-announce/2018/10/msg00018.html, https://github.com/pypa/advisory-database/tree/main/vulns/paramiko/PYSEC-2018-19.yaml, https://github.com/paramiko/paramiko/blob/master/sites/www/changelog.rst, https://github.com/paramiko/paramiko/blob/e861c7697622774071ce73b46ffe8817eacdedfa/sites/www/changelog.rst?plain=1#L759-L763, https://github.com/paramiko/paramiko, https://github.com/advisories/GHSA-232r-66cg-79px, https://access.redhat.com/errata/RHSA-2018:1972, https://access.redhat.com/errata/RHSA-2018:1525, https://access.redhat.com/errata/RHSA-2018:1328, https://access.redhat.com/errata/RHSA-2018:1274, https://access.redhat.com/errata/RHSA-2018:1213, https://access.redhat.com/errata/RHSA-2018:1125, https://access.redhat.com/errata/RHSA-2018:1124, https://access.redhat.com/errata/RHSA-2018:0646, https://access.redhat.com/errata/RHSA-2018:0591, http://www.securityfocus.com/bid/103713

    Affected packages

    Package

    Name: paramiko

    Purl: pkg:pypi/paramiko

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 2.0.0
    Fixed -2.0.8

    Affected versions

    2.0.0
    2.0.1
    2.0.2
    2.0.3
    2.0.4
    2.0.5
    2.0.6
    2.0.7

    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