Foxit Reader 9.0.0.29935 U3D Chain Index out-of-bounds write

Summaryinfo

A vulnerability was found in Foxit Reader 9.0.0.29935. It has been classified as critical. This vulnerability affects unknown code of the component U3D Chain Index Handler. The manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2018-10477. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Foxit Reader 9.0.0.29935 (Document Reader Software). This issue affects an unknown code block of the component U3D Chain Index Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.0.29935. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of U3D Chain Index objects. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated object. An attacker can leverage this vulnerability to execute code under the context of the current process. Was ZDI-CAN-5396.

The bug was discovered 05/04/2018. The weakness was disclosed 05/17/2018 as confirmed security bulletin (Website). The advisory is shared at foxitsoftware.com. The identification of this vulnerability is CVE-2018-10477 since 04/27/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $0-$5k.

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

The entries VDB-82783, VDB-82784, VDB-82785 and VDB-82786 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Document Reader Software

Vendor

• Foxit

Name

• Reader

Version

• 9.0.0.29935

License

• free

Website

• Vendor: https://www.foxitsoftware.com/

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

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