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Test ID:
Title:libssh Server 'CVE-2018-10933' Authentication Bypass
Summary:The remote SSH server is using libssh which is prone to an authentication bypass vulnerability.
The remote SSH server is using libssh which is prone to an authentication bypass vulnerability.

Vulnerability Insight:
By presenting the server an SSH2_MSG_USERAUTH_SUCCESS message in place of the
SSH2_MSG_USERAUTH_REQUEST message which the server would expect to initiate authentication the server is authentciating
users without any credentials.

NOTE: Some server implementations using libssh (e.g. Github Enterprise) are not affected by this issue.

Vulnerability Impact:
An attacker could successfully authentciate without any credentials.

Affected Software/OS:
libssh versions starting from 0.6 and prior to 0.7.6/0.8.4.

Update to libssh version 0.7.6, 0.8.4 or later.

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2018-10933
CopyrightCopyright (C) 2018 Greenbone Networks GmbH

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