CVE-2018-9973: This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.0.1.1049. User interaction ...

Description

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.0.1.1049. 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 ePub files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-5758.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS Probability

2.89%

85.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Foxitsoftware	Foxit Reader	<= 9.0.1.1049
Foxitsoftware	Phantompdf	<= 9.0.1.1049

References

https://www.foxitsoftware.com/support/security-bulletins.phpPatch, Vendor Advisory
https://zerodayinitiative.com/advisories/ZDI-18-357Third Party Advisory, VDB Entry
https://www.foxitsoftware.com/support/security-bulletins.phpPatch, Vendor Advisory
https://zerodayinitiative.com/advisories/ZDI-18-357Third Party Advisory, VDB Entry

Timeline

Published: May 17, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-9973?

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Foxit Reader 9.0.1.1049. 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 ePub files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-5758.

How severe is CVE-2018-9973?

CVE-2018-9973 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.89% probability of exploitation in the next 30 days.

How do I fix CVE-2018-9973?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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