CVE-2018-0447: vulnerability in Cisco Email Security Appliance (ESA)
Cisco Email Security Appliance URL Filtering Bypass Vulnerability
Published · Updated
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3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 2.3%
A vulnerability in the anti-spam protection mechanisms of Cisco AsyncOS Software for the Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass certain content filters on an affected device. The vulnerability is due to incomplete input and validation checking mechanisms for certain Sender Policy Framework (SPF) messages that are sent to an affected device. An attacker could exploit this vulnerability by sending a customized SPF packet to an affected device. If successful, an exploit could allow the attacker to bypass the URL filters that are configured for the affected device, which could allow malicious URLs to pass through the device.
Affected products
Cisco · Cisco Email Security Appliance (ESA)Related CVEs — Cisco Email Security Appliance (ESA)
In the same product, most dangerous first.
CVE-2018-15460HIGHCisco Email Security Appliance URL Filtering Denial of Service VulnerabilityEPSS 2.5%CVE-2018-15453HIGHCisco Email Security Appliance Memory Corruption Denial of Service VulnerabilityEPSS 2.3%CVE-2019-1947HIGHCisco Email Security Appliance Denial of Service VulnerabilityEPSS 1.9%CVE-2019-1983HIGHCisco Email Security Appliance and Cisco Content Security Management Appliance Denial of Service VulnerabilityEPSS 1.9%CVE-2022-20653HIGHCisco Email Security Appliance DNS Verification Denial of Service VulnerabilityEPSS 1.8%CVE-2019-1844MEDIUMCisco Email Security Appliance Filter Bypass VulnerabilityEPSS 1.7%