Creation of Temporary File With Insecure Permissions in Cisco AnyConnect Secure Mobility Client



Published: 2021-05-06
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-1496
CWE-ID CWE-378
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Cisco AnyConnect Secure Mobility Client
Client/Desktop applications / Other client software

Vendor

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Creation of Temporary File With Insecure Permissions

EUVDB-ID: #VU52921

Risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1496

CWE-ID: CWE-378 - Creation of Temporary File With Insecure Permissions

Exploit availability: No

Description

The vulnerability allows a local user to perform an executable hijacking attack.

The vulnerability exists due to the application loads an executable file from a user-writable directory. A local user can copy a malicious executable file to a specific directory and execute arbitrary code on the target device.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco AnyConnect Secure Mobility Client: before 4.9.03022

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-code-exec-jR3tWTA6


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.



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