Vulnerability · Published Jan 26, 2020 · Assigned by cisco
CVE-2020-3134Cisco Email Security Appliance Zip Decompression Engine Denial of Service Vulnerability
Medium 6.5
In plain English
A medium-severity improper input validation in Cisco Email Security Appliance (ESA) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).
Official description
A vulnerability in the zip decompression engine of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of zip files. An attacker could exploit this vulnerability by sending an email message with a crafted zip-compressed attachment. A successful exploit could trigger a restart of the content-scanning process, causing a temporary DoS condition. This vulnerability affects Cisco AsyncOS Software for Cisco ESA releases earlier than 13.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Email Security Appliance (ESA) | earlier than 13.0 |
Weakness: CWE-20 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
References
- 20200122 Cisco Email Security Appliance Zip Decompression Engine Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO