High severity · published Aug 17, 2020
CVE-2020-3433
Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability
RansomwareIn wildKEV
7.8
CVSS
10%
EPSS
Yes
On KEV
Description
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)10.0% · higher than 96% of CVEs
Exploited in the wildYes
CISA KEVListed Oct 24, 2022
Federal remediation dueNov 14, 2022
Ransomware campaign useKnown
Affected products
Which versions
CA
Cisco AnyConnect Secure Mobility Client · Cisco
All versions, or not specified · source: vendor
AS
Anyconnect Secure Mobility Client · Cisco
before 4.9.00086 · source: NVD
AS
AnyConnect Secure · Cisco
All versions, or not specified · source: KEV
Affected product
CA
Cisco AnyConnect Secure Mobility Client
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-3433
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-3433
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
vendor-advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-F26WwJW
x_refsource_MISC
http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html
More from Cisco AnyConnect Secure Mobility Client
6.5
CVE-2020-3153
Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability
