Foxit Reader 9.0.0.29935 BMP Image memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in Foxit Reader 9.0.0.29935. The impacted element is an unknown function of the component BMP Image Handler. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2018-9947. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Foxit Reader 9.0.0.29935 (Document Reader Software) and classified as critical. This issue affects an unknown code of the component BMP Image Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the 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 BMP images. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, heap-based buffer. An attacker can leverage this vulnerability to execute code under the context of the current process. Was ZDI-CAN-5472.

The bug was discovered 04/20/2018. The weakness was published 05/17/2018 as confirmed security bulletin (Website). The advisory is shared at foxitsoftware.com. The identification of this vulnerability is CVE-2018-9947 since 04/10/2018. 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 27 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370955 (Foxit Reader sensitive information disclosure vulnerability).

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

Similar entries are available at VDB-82783, VDB-82784, VDB-82785 and VDB-82786. 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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Entryinfo

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

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