CVE-2016-6372 Security feature bypass in Cisco AsyncOS through WSA10.0.0-000
An unauthenticated remote attacker can bypass email filtering on Cisco ESA and WSA devices by sending malformed MIME headers, allowing quarantined emails to be processed.
- 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-2016-6372?
CVE-2016-6372 is a high-severity vulnerability in Cisco Email Security Appliance, published on 28 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the email message and content filtering for malformed Multipurpose Internet Mail Extensions (MIME) headers of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass the filtering functionality of the targeted device. Emails that should have been quarantined could instead be processed. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco ESA and Cisco WSA on both virtual and hardware appliances that are configured with message or content filters to scan incoming email attachments. More Information: CSCuy54740, CSCuy75174. Known Affected Releases: 9.7.1-066 9.5.0-575 WSA10.0.0-000. Known Fixed Releases: 10.0.0-125 9.1.1-038 9.7.2-047.
Weakness: CWE-20
Which versions are affected by CVE-2016-6372?
It affects 3 products.
Products include Cisco Email Security Appliance, Cisco Web Security Appliance, Cisco Web Security Appliance 8.0.5.
How do I fix CVE-2016-6372?
No fix has been published for CVE-2016-6372 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-6372 being exploited?
There is no known exploitation of CVE-2016-6372 in the wild and no public exploit code.
Other vulnerabilities in Cisco Email Security Appliance
- CVE-2022-20798 Cisco Email Security Appliance and Cisco Secure Email and Web Manager External Authentication Bypass Vulnerability
- CVE-2015-6291 Denial of service in n/a
- CVE-2022-20664 Cisco Email Security Appliance and Cisco Secure Email and Web Manager Information Disclosure Vulnerability
- CVE-2022-20960 Denial of service in Cisco Secure Email
- CVE-2018-0419 Security feature bypass in Email Security Appliance (ESA)
Sources
Also known as GHSA-mmwx-jr3w-37h2.