CVE-2019-1955: medium-severity vulnerability in Cisco Email Security Appliance (ESA)
Cisco Email Security Appliance Header Injection Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 1.4%
A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. The vulnerability is due to incomplete input and validation checking mechanisms for certain 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. A successful exploit could allow the attacker to bypass the header filters that are configured for the affected device, which could allow malicious content to pass through the device.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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-2018-0447—Cisco Email Security Appliance URL Filtering Bypass 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%