Out-of-bounds Read in Foxitsoftware Phantompdf

CVE-2018-5679

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader before 9.1 and PhantomPDF before 9.1. 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 processing of specially crafted pdf files with embedded u3d images. 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 object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process, a different vulnerability than CVE-2018-5677 and CVE-2018-5680.

Vulnerability class: Buffer Overflow

EPSS: 0.041 (89.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-5679?
CVE-2018-5679 is a high-severity vulnerability in Foxitsoftware Phantompdf, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2018-05-24.
How severe is CVE-2018-5679?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-5679 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.