Insecure DLL loading in Cisco AnyConnect Secure Mobility Client - CVE-2020-3153
Published: February 20, 2020 / Updated: October 24, 2022
Vulnerability identifier: #VU25487
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3153
CWE-ID: CWE-427
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to the incorrect handling of directory paths in the installer component. A local user can create a malicious file, copy the file to a system directory and copy malicious files to arbitrary
locations with system level privileges. This can include DLL
pre-loading, DLL hijacking, and other related attacks.
Affected software
Cisco AnyConnect Secure Mobility Client
How to mitigate CVE-2020-3153
Install updates from vendor's website.
Cisco AnyConnect Secure Mobility Client - update to 4.8.02042
Links to Public Exploits and PoC-codes
- Exploit #4667 - Cisco AnyConnect Privilege Escalations (CVE-2020-3153 and CVE-2020-3433) (September 30, 2020)
- Exploit #3052 - Cisco AnyConnect Priv Esc through Path Traversal (July 2, 2020)
- Exploit #2974 - CVE-2020-3153 (PoC for CVE-2020-3153 Cisco AnyConnect Secure Mobility Client EoP) (June 3, 2020)
- Exploit #2997 - CVE-2020-3153 (Cisco AnyConnect < 4.8.02042 privilege escalation through path traversal) (June 3, 2020)
- Exploit #2662 - CVE-2020-3153 (POC code for CVE-2020-3153 - Cisco anyconnect path traversal vulnerability) (May 13, 2020)