CVE-2019-15971 Cisco Email Security Appliance MP3 Content Filter Bypass Vulnerability
An unauthenticated remote attacker can bypass email content filters by sending a crafted MP3 file, allowing malicious emails to pass through the Cisco Email Security Appliance.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-15971?
CVE-2019-15971 is a medium-severity vulnerability in Cisco Email Security Appliance (ESA), published on 26 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the MP3 detection 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 certain MP3 file types. An attacker could exploit this vulnerability by sending a crafted MP3 file through the targeted device. A successful exploit could allow the attacker to bypass configured content filters that would normally drop the email.
Which versions are affected by CVE-2019-15971?
It affects 1 product.
Products include Cisco Email Security Appliance Firmware.
How do I fix CVE-2019-15971?
No fix has been published for CVE-2019-15971 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-15971 being exploited?
There is no known exploitation of CVE-2019-15971 in the wild and no public exploit code.
Other vulnerabilities in Cisco Email Security Appliance (ESA)
- CVE-2016-6406 Auth bypass in n/a
- CVE-2018-15453 Cisco Email Security Appliance Memory Corruption Denial of Service Vulnerability
- CVE-2017-6671 Security feature bypass in Cisco Email Security Appliance
- CVE-2016-6458 Security feature bypass in Cisco AsyncOS 10.0.0-125 and 9.7.1-066
- CVE-2019-12706 Cisco Email Security Appliance Filter Bypass Vulnerability
Sources
Also known as GHSA-qrpg-pg76-xv44.