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Exploits
ID:8006 - Exploit for Authentication bypass in libssh - CVE-2018-10933
ID:8006 - Exploit for Authentication bypass in libssh - CVE-2018-10933
Published: June 9, 2022
Vulnerability identifier: #VU15379
Vulnerability risk: Low
CVE-ID: CVE-2018-10933
CWE-ID: CWE-592
Exploitation vector: Remote access
Vulnerable software:
libssh
libssh
Link to public exploit:
Vulnerability description
The vulnerability allows a remote attacker to bypass authentication on the target system.
The weakness exists due to coding error, when libssh receives the "SSH2_MSG_USERAUTH_SUCCESS" message. A remote attacker can send the SSH server "SSH2_MSG_USERAUTH_SUCCESS" message instead of the "SSH2_MSG_USERAUTH_REQUEST" message that a server usually expects and which libssh uses as a sign that an authentication procedure needs to initiate, bypass authentication procedures and gain access to a server with an SSH connection enabled without having to enter the password.
The weakness exists due to coding error, when libssh receives the "SSH2_MSG_USERAUTH_SUCCESS" message. A remote attacker can send the SSH server "SSH2_MSG_USERAUTH_SUCCESS" message instead of the "SSH2_MSG_USERAUTH_REQUEST" message that a server usually expects and which libssh uses as a sign that an authentication procedure needs to initiate, bypass authentication procedures and gain access to a server with an SSH connection enabled without having to enter the password.
Remediation
The vulnerability has been addressed in the version 0.7.4, 0.8.6.