#VU51735 Resource management error in Cisco IOS XE SD-WAN - CVE-2021-1281

Vulnerability identifier: #VU51735

Vulnerability risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-1281

CWE-ID: CWE-399

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco IOS XE SD-WAN
Other software / Other software solutions

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper management of concurrent CLI sessions within CLI management in Cisco IOS XE SD-WAN Software. A local administrative user can execute a sequence of commands and obtain root privileges on the device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE SD-WAN: 17.3 - 17.4.1

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-clipriv-9TO2QGVp
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv65659

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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