Security restrictions bypass in Cisco Web Security Appliance - CVE-2017-12303
Published: November 21, 2017
Vulnerability identifier: #VU9384
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-12303
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists in the Advanced Malware Protection (AMP) file filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) due to incorrect and different file hash values when AMP scans the file. A remote attacker can send a specially crafted email file attachment and bypass a configured AMP file filter.
The weakness exists in the Advanced Malware Protection (AMP) file filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) due to incorrect and different file hash values when AMP scans the file. A remote attacker can send a specially crafted email file attachment and bypass a configured AMP file filter.
Affected software
Cisco Web Security Appliance
How to mitigate CVE-2017-12303
Install update from vendor's website.