CVE-2013-7177 Denial of service in n/a
Remote attackers can block arbitrary IP addresses by sending crafted emails to Cyrus IMAP servers using Fail2ban, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-7177?
CVE-2013-7177 is a medium-severity denial of service vulnerability in n/a, published on 1 Feb 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
config/filter.d/cyrus-imap.conf in the cyrus-imap filter in Fail2ban before 0.8.11 allows remote attackers to trigger the blocking of an arbitrary IP address via a crafted e-mail address that matches an improperly designed regular expression.
Weakness: CWE-20
Which versions are affected by CVE-2013-7177?
It affects 1 product.
Products include Fail2ban Fail2ban.
How do I fix CVE-2013-7177?
Upgrade to a fixed version.
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-2013-7177 being exploited?
There is no known exploitation of CVE-2013-7177 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2013-7177, GHSA-9rh6-j3cg-gfgj.