Improper input validation in Cisco Email Security Appliance (Esa)

CVE-2019-1905

A vulnerability in the GZIP decompression engine of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured content filters on the device. The vulnerability is due to improper validation of GZIP-formatted files. An attacker could exploit this vulnerability by sending a malicious file inside a crafted GZIP-compressed file. A successful exploit could allow the attacker to bypass configured content filters that would normally drop the email.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.014 (68.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-1905?
CVE-2019-1905 is a medium-severity vulnerability in Cisco Email Security Appliance (Esa), classified under Improper Input Validation. CVSS score: 5.8/10. Published 2019-06-20.
How severe is CVE-2019-1905?
Medium severity. CVSS v3 base score is 5.8 out of 10.