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Rewterz Threat Advisory – CVE-2023-20215 – Cisco AsyncOS Software for Cisco Secure Web Appliance Vulnerbility

Severity

Medium

Analysis Summary

CVE-2023-20215

Cisco AsyncOS Software for Cisco Secure Web Appliance could allow a remote attacker to bypass security restrictions, caused by improper detection of malicious traffic when the traffic is encoded with a specific content format. By using an affected device to connect to a malicious server and receiving crafted HTTP responses, an attacker could exploit this vulnerability to bypass an explicit block rule and receive traffic that should have been rejected by the device

Impact

  • Security Bypass

Indicators Of Compromise

CVE

  • CVE-2023-20215

Affected Vendors

Cisco

Affected Products

  • Cisco AsyncOS for Secure Web Appliance
  • Cisco Secure Web Appliance

Remediation

Refer to Cisco Security Advisory for patch, upgrade or suggested workaround information. 

Cisco Security Advisory