Use After Free in Foxit Pdf Editor
CVE-2021-34973
Foxit PDF Reader PDF File Parsing Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. 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 PDF files. 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 in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-14968.
Vulnerability class: Use-After-Free
EPSS: 0.003 (26.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Foxit Pdf_editor — versions 11.0.0.49893, 11.0.1.49938
- Foxit Pdf Reader — versions 11.0.1.49938
- Foxit Pdf_reader
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
- zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)
- zdi-disclosures@trendmicro.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34973?
- CVE-2021-34973 is a medium-severity vulnerability in Foxit Pdf Editor, classified under Use After Free. CVSS score: 5.5/10. Published 2024-05-07.
- How severe is CVE-2021-34973?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-34973 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.