CVE-2011-1947 Denial of service in n/a
Remote servers can cause fetchmail to hang by delaying responses after STARTTLS or STLS requests, leading to 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-2011-1947?
CVE-2011-1947 is a medium-severity denial of service vulnerability in n/a, published on 2 Jun 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
fetchmail 5.9.9 through 6.3.19 does not properly limit the wait time after issuing a (1) STARTTLS or (2) STLS request, which allows remote servers to cause a denial of service (application hang) by acknowledging the request but not sending additional packets.
Weakness: CWE-399
Which versions are affected by CVE-2011-1947?
It affects 1 product.
Products include Fetchmail Fetchmail.
How do I fix CVE-2011-1947?
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-2011-1947 being exploited?
There is no known exploitation of CVE-2011-1947 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2011-1947, GHSA-xrcr-j9jp-xv96.