CVE-2015-6309 Denial of service in n/a
Remote authenticated users can cause a denial of service on Cisco Email Security Appliances via crafted HTTP requests.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2015-6309?
CVE-2015-6309 is a medium-severity denial of service vulnerability in Cisco Email Security Appliance, published on 2 Oct 2015. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Cisco Email Security Appliance (ESA) 8.5.6-106 and 9.6.0-042 allows remote authenticated users to cause a denial of service (file-descriptor consumption and device reload) via crafted HTTP requests, aka Bug ID CSCuw32211.
Weakness: CWE-399
Which versions are affected by CVE-2015-6309?
It affects 2 products.
Products include Cisco Email Security Appliance, Cisco Email Security Appliance Firmware.
How do I fix CVE-2015-6309?
No fix has been published for CVE-2015-6309 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-2015-6309 being exploited?
There is no known exploitation of CVE-2015-6309 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-52q5-573g-349h.