#VU47238 Permissions, Privileges, and Access Controls in Cisco IOS XE - CVE-2020-3141

Vulnerability identifier: #VU47238

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-3141

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XE
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to a lack of input and validation checking mechanisms for certain HTTP requests to APIs on an affected device. A remote authenticated attacker can send a specially crafted HTTP request and execute CLI commands or configuration changes as if they were an administrative user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: 17.2.1, 17.3, 17.4.1

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-webui-priv-esc-K8zvEWM

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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