SB2017120115 - Security restrictions bypass in Cisco Email Security Appliance
Published: December 1, 2017
Security Bulletin ID
SB2017120115
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2017-12353)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.The weakness exists in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) due to improper error handling of a malformed MIME header in an email attachment. A remote attacker can send an email with a crafted MIME attachment and bypass configured user filters to drop the email.
Remediation
Install update from vendor's website.