CVE-2012-3989

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.

Category

9.3
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 0.85% Top 30%
Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/50904 third party advisory broken link
http://secunia.com/advisories/50984 third party advisory broken link
http://secunia.com/advisories/50935 third party advisory broken link
https://bugzilla.mozilla.org/show_bug.cgi?id=783867 issue tracking vendor advisory
http://secunia.com/advisories/50856 third party advisory broken link
http://secunia.com/advisories/50892 third party advisory broken link
http://osvdb.org/86097 vdb entry broken link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16814 vdb entry third party advisory signature
http://www.mozilla.org/security/announce/2012/mfsa2012-80.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html mailing list third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-1611-1 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2012-3989?
CVE-2012-3989 has been scored as a critical severity vulnerability.
How to fix CVE-2012-3989?
To fix CVE-2012-3989, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-3989 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2012-3989 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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