Description
A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cisco | Cisco AnyConnect Secure Mobility Client | unspecified – < n/a | n/a |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Metasploit 1 module
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Cisco AnyConnect Privilege Escalations (CVE-2020-3153 and CVE-2020-3433)
exploit/windows/local/anyconnect_lpe
GitHub 3 repositories
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goichot/CVE-2020-3153 ★ 103 · May 19, 2020
Cisco AnyConnect < 4.8.02042 privilege escalation through path traversal
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shubham0d/CVE-2020-3153 ★ 5 · May 4, 2020
POC code for CVE-2020-3153 - Cisco anyconnect path traversal vulnerability
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raspberry-pie/CVE-2020-3153 ★ 0 · May 15, 2020
PoC for CVE-2020-3153 Cisco AnyConnect Secure Mobility Client EoP
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 20200219 Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability vendor-advisory
- 20200421 Cisco AnyConnect elevation of privileges due to insecure handling of path names mailing-list
- http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html
- http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html
- http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html