Creation of Temporary File With Insecure Permissions in Cisco AnyConnect Secure Mobility Client - CVE-2021-1426
Published: May 6, 2021
Vulnerability identifier: #VU52911
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1426
CWE-ID: CWE-378
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform an executable hijacking attack.
The vulnerability exists due to a temporary file with insecure permissions is created during the uninstall process. A local user can overwrite the temporary file before it is accessed for execution and execute arbitrary code on the target device.
Affected software
Cisco AnyConnect Secure Mobility Client
How to mitigate CVE-2021-1426
Install updates from vendor's website.
Cisco AnyConnect Secure Mobility Client - update to 4.9.06037