Vulnerability · Published Aug 4, 2021 · Assigned by zdi
CVE-2021-34831
High 7.8
In plain English
A high-severity use-after-free in Reader from Foxit. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.5% (higher than 89% of all known vulnerabilities).
Official description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.4.37651. 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 Document 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-13741.
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://www.foxit.com/support/security-bulletins.html x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-913/ x_refsource_MISC