#VU17363 OS Command Injection in rssh - CVE-2019-3463

Vulnerability identifier: #VU17363

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-3463

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
rssh
Server applications / Remote management servers, RDP, SSH

Vendor: rssh.sourceforge.net

Description

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

The vulnerability exists due to improper validation in the rsync support. A remote unauthenticated attacker can bypass the rsync support and execute arbitrary OS commands on the target system and perform only scp, sftp, cvs, svnserve (Subversion), rdist and/or rsync operations.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

rssh: All versions

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External links
https://vulmon.com/exploitdetails?qidtp=bugtraq&qid=9dd282c83c3b3f4910eb8f956b274de2

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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.