7.8high

CVE-2021-1237

Cisco AnyConnect Secure Mobility Client for Windows DLL Injection Vulnerability

Published 5 y ago · modified 4 mo ago · JSON

CVSS
7.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 36%
Public exploits
0
none known

Summary

A vulnerability in the Network Access Manager and Web Security Agent components of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL injection 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 inserting a configuration file in a specific path in the system which, in turn, causes a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges.

CISA SSVC assessment

Exploitation
none
Automatable
no
Technical impact
total
Assessed
23 mo ago

Exploit prediction (EPSS)

0.41% probability of exploitation in the next 30 days, higher than 36% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA3.17.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA3.17.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD3.17.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.07.2AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Cisco Cisco AnyConnect Secure Mobility Client

Classification

Weakness
  • CWE-427 Uncontrolled Search Path Element

References

  • tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-injec-pQnryXLf · vendor-advisory, x_refsource_CISCO, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.