CVE-2021-21870
published 2021-08-05CVE-2021-21870: A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651. A specially crafted PDF document can…
PriorityP347high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.90%
77.5th percentile
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| foxit | pdf_reader | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
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Talos
Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader
blogs_talos·2021-07-27·CVSS 8.8
CVE-2021-21831 [HIGH] Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader
## Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader
Aleksandar Nikolic of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw.
Cisco Talos recently discovered multiple use-after-free vulnerabilities in the Foxit PDF Reader.
Foxit PDF Reader is one of the most popular PDF document readers currently available. As a complete and feature-rich PDF reader, it supports JavaScript for interactive documents and dynamic forms.
TALOS-2021-1294 (CVE-2021-21831), TALOS-2021-1307 (CVE-2021-21870) and TALOS-2021-1336 (CVE-2021-21893) are all use-after-free vulnerabilities that exist in the PDF Reader that could lead to an adversary gaining the ability to execute arbitrary code on the victim machine. An attacker needs to trick a user into opening a specially craft
Talos
Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader
blogs_talos·2021-07-27·CVSS 8.8
CVE-2021-21831 [HIGH] Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader
Aleksandar Nikolic of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw.
Cisco Talos recently discovered multiple use-after-free vulnerabilities in the Foxit PDF Reader.
Foxit PDF Reader is one of the most popular PDF document readers currently available. As a complete and feature-rich PDF reader, it supports JavaScript for interactive documents and dynamic forms.
TALOS-2021-1294 (CVE-2021-21831), TALOS-2021-1307 (CVE-2021-21870) and TALOS-2021-1336 (CVE-2021-21893) are all use-after-free vulnerabilities that exist in the PDF Reader that could lead to an adversary gaining the ability to execute arbitrary code on the victim machine. An attacker needs to trick a user into opening a specially crafted, malicious PDF to exploit these vulnerabilities.
Cisco Talos worked with Fox
2021-08-05
Published