Known exploited vulnerability
CVE-2020-3153
The short answer
CVE-2020-3153 affects Cisco Cisco AnyConnect Secure Mobility Client and is rated medium (CVSS 6.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-10-24: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-427.
Severity
6.5 medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Exploited (CISA KEV)
Yes, since Oct 24, 2022
Federal due date Nov 14, 2022
EPSS, next 30 days
29%
Higher than 98% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- None
- Integrity impact
- High
- Availability impact
- None
What CISA says to do
Apply updates per vendor instructions.
Affected products
Cisco AnyConnect Secure Mobility Client. NVD's record lists the exact affected versions.
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj Vendor Advisory
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3153 US Government Resource
Questions
Is CVE-2020-3153 being exploited?
Yes. CISA added CVE-2020-3153 to its Known Exploited Vulnerabilities catalog on 2022-10-24, with a federal remediation due date of 2022-11-14. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2020-3153?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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