#VU81284 Memory leak in Cisco Systems, Inc products - CVE-2023-20251

Vulnerability identifier: #VU81284

Vulnerability risk: Low

CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-20251

CWE-ID: CWE-401

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Cisco Wireless LAN Controller (WLC) AireOS Software
Hardware solutions / Firmware
Virtual Wireless LAN Controller (vWLC)
Hardware solutions / Firmware
Cisco Mobility Express
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in the memory buffer. A remote attacker on the local network can force the application to leak memory and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Wireless LAN Controller (WLC) AireOS Software: 8.10.150 - 8.10.185

Cisco Mobility Express: All versions

Virtual Wireless LAN Controller (vWLC): All versions

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External links
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cbw-dos-YSmbUqX3

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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