Remote code execution in Cisco Modeling Labs

1) Improper Neutralization of Argument Delimiters in a Command

EUVDB-ID: #VU53395

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1531

CWE-ID: CWE-88 - Argument Injection or Modification

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability due to insufficient validation of user-supplied input to the web UI. A remote authenticated attacker send a specially crafted HTTP request and execute arbitrary commands with the privileges of the web application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Modeling Labs: 2.0.0 - 2.1.3

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cml-cmd-inject-N4VYeQXB

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

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