CVE-2021-21831 — Use After Free in Foxit Reader

CWE-416 — Use After Free5 documents4 sources
Severity
8.8HIGHNVD
EPSS
0.9%
top 24.87%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Foxitsoftware Foxit ReaderFoxit PDF Reader
Timeline
PublishedAug 5
Latest updateMay 24

Description

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously freed memory, which can lead to arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages2 packages

▶NVDfoxit/pdf_reader10.1.3.37598
▶CVEListV5foxitsoftware/foxit_readerFoxit Reader 10.1.3.37598

🔴Vulnerability Details

2
GHSA
GHSA-52v6-wpr7-xp26: A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10↗2022-05-24
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CVEList
CVE-2021-21831: A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10↗2021-08-05
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🕵️Threat Intelligence

2
Talos
Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader↗2021-07-27
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Talos
Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader↗2021-07-27
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CVE-2021-21831 — Use After Free in Foxit Reader | cvebase