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CVE-2018-10933

Quick assessment

Affected
[UNKNOWN] libssh
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libssh是一个用于访问SSH服务的C语言开发包，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。server-side state machine是其中的一个服务器端状态机。 libssh的server-side state machine 0.7.6之前版本和0.8.4之前版本中存在安全漏洞。攻击者可借助恶意的客户端利用该漏洞在不进行身份验证的情况下创建通道，进而获取未授权的访问权限。

AI Predicted 8.1 Difficulty: Easy EPSS 91.79% · P100
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I. Basic Information for CVE-2018-10933

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-592
Source: CVE Program / CVE List V5
Vulnerability Title
libssh server-side state machine 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libssh是一个用于访问SSH服务的C语言开发包，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。server-side state machine是其中的一个服务器端状态机。 libssh的server-side state machine 0.7.6之前版本和0.8.4之前版本中存在安全漏洞。攻击者可借助恶意的客户端利用该漏洞在不进行身份验证的情况下创建通道，进而获取未授权的访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
[UNKNOWN] libssh 0.7.6 -

II. Public POCs for CVE-2018-10933

# POC Description Source Link Shenlong Link
1 CVE-2018-10933 very simple POC https://github.com/SoledaD208/CVE-2018-10933 POC Details
2 Spawn to shell without any credentials by using CVE-2018-10933 (LibSSH) https://github.com/blacknbunny/CVE-2018-10933 POC Details
3 CVE-2018-10933 sshlib user authentication attack - docker lab, test and exploit https://github.com/hook-s3c/CVE-2018-10933 POC Details
4 Leveraging it is a simple matter of presenting the server with the SSH2_MSG_USERAUTH_SUCCESS message, which shows that the login already occurred without a problem. The server expects the message SSH2_MSG_USERAUTH_REQUEST to start the authentication procedure, but by skipping it an attacker can log in without showing any credentials. https://github.com/kn6869610/CVE-2018-10933 POC Details
5 Script to identify hosts vulnerable to CVE-2018-10933 https://github.com/gojhonny/libssh-scanner POC Details
6 None https://github.com/likescam/CVE-2018-10933_ssh POC Details
7 None https://github.com/likescam/CVE-2018-10933-libSSH-Authentication-Bypass POC Details
8 Hunt for and Exploit the libSSH Authentication Bypass (CVE-2018-10933) https://github.com/marco-lancini/hunt-for-cve-2018-10933 POC Details
9 cve-2018-10933 libssh authentication bypass https://github.com/hackerhouse-opensource/cve-2018-10933 POC Details
10 None https://github.com/cve-2018/cve-2018-10933 POC Details
11 libssh CVE-2018-10933 https://github.com/jas502n/CVE-2018-10933 POC Details
12 Variant of hackerhouse-opensource/cve-2018-10933 https://github.com/ninp0/cve-2018-10933_poc POC Details
13 None https://github.com/pghook/CVE-2018-10933_Scanner POC Details
14 LibSSH Authentication Bypass Exploit using RCE https://github.com/Virgula0/POC-CVE-2018-10933 POC Details
15 CVE-2018-10933 https://github.com/shifa123/pythonprojects-CVE-2018-10933 POC Details
16 a python script to exploit libssh authentication vulnerability https://github.com/xFreed0m/CVE-2018-10933 POC Details
17 CVE-2018-10933 https://github.com/Bifrozt/CVE-2018-10933 POC Details
18 CVE-2018-10933 POC (LIBSSH) https://github.com/r3dxpl0it/CVE-2018-10933 POC Details
19 A libssh CVE-2018-10933 scanner written in rust https://github.com/ivanacostarubio/libssh-scanner POC Details
20 None https://github.com/throwawayaccount12312312/precompiled-CVE-2018-10933 POC Details
21 Multi-threaded, reliable scanner for CVE-2018-10933. https://github.com/reanimat0r/bpnd-libssh POC Details
22 None https://github.com/ensimag-security/CVE-2018-10933 POC Details
23 Implementation of CVE-2018-10933 with CIDR block scanner https://github.com/0xadaw/libSSH-bypass POC Details
24 libSSH bypass https://github.com/sambiyal/CVE-2018-10933-POC POC Details
25 LibSSH Authentication Bypass CVE-2018-10933 https://github.com/nikhil1232/LibSSH-Authentication-Bypass POC Details
26 Takes advantage of CVE-2018-10933 https://github.com/Kurlee/LibSSH-exploit POC Details
27 None https://github.com/crispy-peppers/Libssh-server-CVE-2018-10933 POC Details
28 Authentication Bypass in Server Code for LibSSH https://github.com/youkergav/CVE-2018-10933 POC Details
29 None https://github.com/kristyna-mlcakova/CVE-2018-10933 POC Details
30 None https://github.com/lalishasanduwara/CVE-2018-10933 POC Details
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III. Intelligence Information for CVE-2018-10933

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Vendor Advisories for CVE-2018-10933 (7)

Exploits & Public PoCs for CVE-2018-10933 (1)

Mailing List Discussions for CVE-2018-10933 (1)

Other References for CVE-2018-10933 (2)

IV. Related Vulnerabilities

Same product: libssh
Same vendor: [UNKNOWN]
Same weakness: CWE-592

V. Comments for CVE-2018-10933

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