CVE-2009-4171 Null dereference in n/a
Remote attackers can crash Yahoo! Messenger via a NULL pointer dereference in an ActiveX control, requiring user interaction to trigger the vulnerability.
- 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
- None listed
What is CVE-2009-4171?
CVE-2009-4171 is a medium-severity vulnerability in n/a, published on 2 Dec 2009. 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
An ActiveX control in YahooBridgeLib.dll for Yahoo! Messenger 9.0.0.2162, and possibly other 9.0 versions, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by calling the RegisterMe method with a long argument.
Weakness: CWE-119
Which versions are affected by CVE-2009-4171?
It affects 1 product.
Products include Yahoo Messenger.
How do I fix CVE-2009-4171?
No fix has been published for CVE-2009-4171 yet. Limit exposure of the affected software until one is available.
Is CVE-2009-4171 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-4171 exists.
Public exploit code: 2 Exploit-DB entries.
Other vulnerabilities in n/a
Sources
Also known as GHSA-rmjx-qrw2-mx8p.