CVE-2011-2943 Null dereference in n/a
Remote attackers can crash Pidgin via crafted IRC nicknames, requiring user interaction to trigger the denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2011-2943?
CVE-2011-2943 is a medium-severity vulnerability in Pidgin Pidgin, published on 29 Aug 2011. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The irc_msg_who function in msgs.c in the IRC protocol plugin in libpurple 2.8.0 through 2.9.0 in Pidgin before 2.10.0 does not properly validate characters in nicknames, which allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted nickname that is not properly handled in a WHO response.
Which versions are affected by CVE-2011-2943?
It affects 2 products.
Products include Pidgin Libpurple, Pidgin Pidgin.
How do I fix CVE-2011-2943?
Upgrade to a fixed version.
Is CVE-2011-2943 being exploited?
There is no known exploitation of CVE-2011-2943 in the wild and no public exploit code.
Other vulnerabilities in Pidgin Pidgin
- CVE-2009-2703 Null dereference in n/a
- CVE-2009-3083 Null dereference in n/a
- CVE-2009-3084 The msn_slp_process_msg function in libpurple/protocols/msn/slpcall.c in the MSN protocol plugin in libpurple 2.6.0 and 2.6.1, as used in Pi
- CVE-2009-3085 Denial of service in n/a
- CVE-2011-3594 Memory corruption in n/a
Sources
Also known as DEBIAN-CVE-2011-2943, GHSA-39wr-cgvv-f2w7.