Security restrictions bypass in Cisco Web Security Appliance - CVE-2017-12303
Published: November 21, 2017
Vulnerability identifier: #VU9384
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2017-12303
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Web Security Appliance
Cisco Web Security Appliance
Detailed vulnerability description
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.
How to mitigate CVE-2017-12303
Install update from vendor's website.