Remote command injection in libssh



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-14889
CWE-ID CWE-78
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libssh
Universal components / Libraries / Libraries used by multiple products

Vendor libssh

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) OS Command Injection

EUVDB-ID: #VU23508

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-14889

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to incorrect handling of the SCP command parameters when initiating the connection within the ssh_scp_new() function. A remote attacker can trick victim into using a specially crafted SCP command to connect to a remote SCP server and execute arbitrary commands on the target server with privileges of the current user.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libssh: 0.4.0 - 0.9.2

CPE2.3 External links

https://www.libssh.org/security/advisories/CVE-2019-14889.txt


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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