#VU43210 Input validation error in rssh - CVE-2012-2251

Vulnerability identifier: #VU43210

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-2251

CWE-ID: CWE-20

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 non-authenticated attacker to read and manipulate data.

rssh 2.3.2, as used by Debian, Fedora, and others, when the rsync protocol is enabled, allows local users to bypass intended restricted shell access via a (1) "-e" or (2) "--" command line option.

Mitigation
Install update from vendor's website.

Vulnerable software versions

rssh: 2.3.2

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External links
https://archives.neohapsis.com/archives/bugtraq/2012-11/0101.html
https://secunia.com/advisories/51307
https://www.debian.org/security/2012/dsa-2578
https://www.openwall.com/lists/oss-security/2012/11/27/15
https://www.securityfocus.com/bid/56708
https://bugzilla.redhat.com/show_bug.cgi?id=877279
https://exchange.xforce.ibmcloud.com/vulnerabilities/80334

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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.