CVE-2009-1959 Memory corruption in n/a
Remote IRC servers can crash the irssi client via an off-by-one error in event handling, causing a 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-2009-1959?
CVE-2009-1959 is a medium-severity memory corruption vulnerability in n/a, published on 6 Jun 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-byte buffer under-read and a one-byte buffer underflow.
Weakness: CWE-189
Which versions are affected by CVE-2009-1959?
It affects 1 product.
Products include Irssi Irssi.
How do I fix CVE-2009-1959?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2009-1959 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-1959 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2009-1959, GHSA-2v73-9rwq-75qc.