CVE-2015-4236 Denial of service in n/a
Remote attackers can cause denial of service on Cisco ESA devices via packet flood when clustering is enabled.
- 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-2015-4236?
CVE-2015-4236 is a medium-severity denial of service vulnerability in Cisco Email Security Appliance, published on 10 Jul 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco AsyncOS on Email Security Appliance (ESA) devices with software 8.5.6-073, 8.5.6-074, and 9.0.0-461, when clustering is enabled, allows remote attackers to cause a denial of service (clustering and SSH outage) via a packet flood, aka Bug IDs CSCur13704 and CSCuq05636.
Weakness: CWE-399
Which versions are affected by CVE-2015-4236?
It affects 2 products.
Products include Cisco Email Security Appliance, Cisco Email Security Appliance Firmware.
How do I fix CVE-2015-4236?
No fix has been published for CVE-2015-4236 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2015-4236 being exploited?
There is no known exploitation of CVE-2015-4236 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-gh4h-fj72-jqq3.