CVE-2020-3433
Cisco AnyConnect Secure: Mobility Client for Windows DLL Hijacking
As of , CVE-2020-3433 in Cisco AnyConnect Secure is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 24 October 2022
- US federal deadline
- 14 November 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Known
- EPSS score
- 0.10Higher than 95% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- 0.03 on 24 October 2022EPSS on the day CISA listed it.
- Public exploit
- 1 Metasploit module
- Fix
- Vendor advice: tools.cisco.comLinks below, from CISA's entry.
What CISA says to do
Apply updates per vendor instructions.
CISA's required action
What the flaw is
Cisco AnyConnect Secure Mobility Client for Windows interprocess communication (IPC) channel allows for insufficient validation of resources that are loaded by the application at run time. An attacker with valid credentials on Windows could execute code on the affected machine with SYSTEM privileges.
CISA's 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.
The CVE record's description, from cisco
- CVE published
- 17 August 2020
- Assigned by
- cisco
- CVSS
- 7.8 High (CVSS 3.1, from the CNA)
- CWE-427
- Uncontrolled Search Path Element
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- no
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
Public exploits
Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.
- Metasploit: Cisco AnyConnect Privilege Escalations (CVE-2020-3153 and CVE-2020-3433)exploit module, rank excellent
AnyConnect Secure: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2020-3153Mobility Client for Windows Uncontrolled Search Path | Cisco AnyConnect Secure | Patch this weekRansomware use; Metasploit module | 0.28 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org