Use After Free in Foxit Reader
CVE-2021-31457
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 Annotation objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-13147.
Vulnerability class: Use-After-Free
EPSS: 0.028 (84.9th 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 Phantompdf
- Foxitsoftware Reader
- Microsoft Windows
Weakness classification (CWE)
References
- zdi-disclosures@trendmicro.com (Patch, x_refsource_MISC, Vendor Advisory)
- zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-31457?
- CVE-2021-31457 is a high-severity vulnerability in Foxit Reader, classified under Use After Free. CVSS score: 7.8/10. Published 2021-05-07.
- How severe is CVE-2021-31457?
- High severity. CVSS v3 base score is 7.8 out of 10.