CVE-2020-3134

Cisco Email Security Appliance Zip Decompression Engine Denial of Service Vulnerability

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.58%
Vendor Advisory cisco.com
Affected: Cisco Cisco Email Security Appliance (ESA)
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-dos-87mBkc8n vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-3134?
CVE-2020-3134 has been scored as a medium severity vulnerability.
How to fix CVE-2020-3134?
To fix CVE-2020-3134, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-3134 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-3134 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-3134?
CVE-2020-3134 affects Cisco Cisco Email Security Appliance (ESA).
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