Double Free in Foxit Reader
CVE-2021-31449
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. 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 handling of U3D objects embedded in PDF files. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-13280.
Vulnerability class: Double Free
EPSS: 0.028 (85.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Foxit Reader — versions 10.1.1.37576
- Foxitsoftware Foxit_reader
- Foxitsoftware Phantompdf
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
- zdi-disclosures@trendmicro.com (x_refsource_MISC, Vendor Advisory)
- zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-31449?
- CVE-2021-31449 is a high-severity vulnerability in Foxit Reader, classified under Double Free. CVSS score: 7.8/10. Published 2021-05-07.
- How severe is CVE-2021-31449?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-31449 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.