CVE-2020-3153
Act now ● On CISA KEV — actively exploited used in ransomware
Actively exploited — on the CISA KEV list.
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | C | Changed |
| Confidentiality | N | None |
| Integrity | H | High |
| Availability | N | None |
Timeline
- 2020-02-19 — Published (NVD)
- 2022-10-24 — Added to CISA KEV (actively exploited)
- 2022-11-14 — CISA patch-by deadline
- 2026-08-12 — Last modified (NVD)
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
References
- exploit http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html
- exploit http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html
- exploit http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html
- exploit http://seclists.org/fulldisclosure/2020/Apr/43
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj
- exploit http://packetstormsecurity.com/files/157340/Cisco-AnyConnect-Secure-Mobility-Client-4.8.01090-Privilege-Escalation.html
- exploit http://packetstormsecurity.com/files/158219/Cisco-AnyConnect-Path-Traversal-Privilege-Escalation.html
- exploit http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html
- exploit http://seclists.org/fulldisclosure/2020/Apr/43
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153