Vulnerability identifier: #VU83235

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-20240

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco AnyConnect Secure Mobility Client
Client/Desktop applications / Other client software
Cisco Secure Client AnyConnect VPN for iOS
Mobile applications / Apps for mobile phones
Secure Client AnyConnect for Android
Mobile applications / Apps for mobile phones
Cisco Secure Client AnyConnect for Universal Windows Platform
Mobile applications / Apps for mobile phones
Cisco Secure Client for Linux
Other software / Other software solutions
Cisco Secure Client for MacOS
Other software / Other software solutions

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a local user to perform a enial of service (DoS) attack.

The vulnerability exists due to a boundary condition. A local user can trigger an out-of-bounds read error and cause a denial of service condition on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco AnyConnect Secure Mobility Client: 4.10 - 5.0

Cisco Secure Client AnyConnect VPN for iOS: All versions

Secure Client AnyConnect for Android: All versions

Cisco Secure Client AnyConnect for Universal Windows Platform: All versions

Cisco Secure Client for Linux: All versions

Cisco Secure Client for MacOS: All versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-accsc-dos-9SLzkZ8

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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.