A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.
Published 2018-10-17 12:29:01
Updated 2019-10-09 23:33:16
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Threat overview for CVE-2018-10933

Top countries where our scanners detected CVE-2018-10933
Top open port discovered on systems with this issue 53
IPs affected by CVE-2018-10933 115,983
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2018-10933!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2018-10933

14.23%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 96 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2018-10933

  • libssh Authentication Bypass Scanner
    Disclosure Date: 2018-10-16
    First seen: 2020-04-26
    auxiliary/scanner/ssh/libssh_auth_bypass
    This module exploits an authentication bypass in libssh server code where a USERAUTH_SUCCESS message is sent in place of the expected USERAUTH_REQUEST message. libssh versions 0.6.0 through 0.7.5 and 0.8.0 through 0.8.3 are vulnerable. Note that this module'

CVSS scores for CVE-2018-10933

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.4
MEDIUM AV:N/AC:L/Au:N/C:P/I:P/A:N
10.0
4.9
NIST
9.1
CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.9
5.2
NIST
9.1
CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.9
5.2
Red Hat, Inc.

CWE ids for CVE-2018-10933

  • When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
    Assigned by: nvd@nist.gov (Primary)
  • Assigned by: secalert@redhat.com (Secondary)

References for CVE-2018-10933

Products affected by CVE-2018-10933

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