Vulnerability identifier: #VU77088

Vulnerability risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-20178

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Cisco AnyConnect Secure Mobility Client
Client/Desktop applications / Other client software
Cisco Secure Client
Client/Desktop applications / Other client software

Vendor: Cisco Systems, Inc

Description

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

The vulnerability exists due to improper permissions are assigned to a temporary directory that is created during the upgrade process. A local user can execute arbitrary code with SYSTEM privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco AnyConnect Secure Mobility Client: 4.10

Cisco Secure Client: 5.0

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-csc-privesc-wx4U4Kw

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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. However, proof of concept for this vulnerability is available.