PT-2021-1699 · Cisco · Cisco Anyconnect Secure Mobility Client

Ammarit Thongthua + 3 · Published 2021-01-13 · Updated 2021-01-19 · CVE-2021-1237

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Cisco AnyConnect Secure Mobility Client for Windows (affected versions not specified)

Description A vulnerability in the Network Access Manager and Web Security Agent components could allow an authenticated, local attacker to perform a DLL injection attack by exploiting insufficient validation of resources loaded by the application at run time. The attacker would need valid credentials on the Windows system. To exploit this, an attacker could insert a configuration file in a specific system path, causing a malicious DLL file to be loaded when the application starts, potentially allowing the execution of arbitrary code on the affected machine with SYSTEM privileges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Uncontrolled Search Path Element

Weakness Enumeration

CWE-427

Related Identifiers

BDU:2021-00371

CVE-2021-1237

Affected Products

Cisco Anyconnect Secure Mobility Client

References · 4

• https://osv.dev/vulnerability/CVE-2021-1237 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-00371 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1237 · Security Note