CVE-2011-4603 Denial of service in n/a
Remote attackers can crash the Pidgin instant messenger application by sending crafted messages via the SILC protocol plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-4603?
CVE-2011-4603 is a medium-severity denial of service vulnerability in Pidgin Pidgin, published on 17 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.
Weakness: CWE-20
Which versions are affected by CVE-2011-4603?
It affects 1 product.
Products include Pidgin Pidgin.
How do I fix CVE-2011-4603?
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-2011-4603 being exploited?
There is no known exploitation of CVE-2011-4603 in the wild and no public exploit code.
Other vulnerabilities in Pidgin Pidgin
Sources
Also known as DEBIAN-CVE-2011-4603, GHSA-6f79-g335-f9mf.