CVE-2012-3989 Memory corruption in n/a
Remote attackers can execute arbitrary code or cause denial of service via crafted websites due to improper variable casting in JavaScript instanceof operations.
- 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-2012-3989?
CVE-2012-3989 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 10 Oct 2012. 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
Mozilla Firefox before 16.0, Thunderbird before 16.0, and SeaMonkey before 2.13 do not properly perform a cast of an unspecified variable during use of the instanceof operator on a JavaScript object, which allows remote attackers to execute arbitrary code or cause a denial of service (assertion failure) via a crafted web site.
Weakness: CWE-119
Which versions are affected by CVE-2012-3989?
It affects 6 products.
Products include Canonical Ubuntu Linux, Mozilla Firefox, Mozilla Seamonkey, Mozilla Thunderbird, Suse Linux Enterprise Desktop, Suse Linux Enterprise Server.
How do I fix CVE-2012-3989?
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-2012-3989 being exploited?
There is no known exploitation of CVE-2012-3989 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as GHSA-g6fr-f3gf-jvqr.