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Rewterz Threat Advisory – CVE-2023-20275 – Cisco Adaptive Security Appliance and Firepower Threat Defense Software Vulnerability

Severity

Medium

Analysis Summary

CVE-2023-20275

Cisco Adaptive Security Appliance and Firepower Threat Defense Software could allow a remote authenticated attacker to bypass security restrictions, caused by improper validation of the packet’s inner source IP address after decryption. By sending specially crafted packets through the tunnel, an attacker could exploit this vulnerability to send a packet impersonating another VPN user’s IP address.

Impact

  • Security Bypass

Indicators Of Compromise

CVE

  • CVE-2023-20275

Affected Vendors

Cisco

Affected Products

  • Cisco Firepower Threat Defense (FTD) Software
  • Cisco Adaptive Security Appliance

Remediation

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

Cisco Security Advisory