CVE-2021-21893 — Use After Free in Foxit Reader

CWE-416 — Use After Free6 documents5 sources
Severity
8.8HIGHNVD
EPSS
1.0%
top 22.92%
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 11.0.0.49893. 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_reader11.0.0.49893
▶CVEListV5foxitsoftware/foxit_readerFoxit Reader 11.0.0.49893

🔴Vulnerability Details

2
GHSA
GHSA-cjvq-xvv5-f922: A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11↗2022-05-24
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CVEList
CVE-2021-21893: A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11↗2021-08-05
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🕵️Threat Intelligence

3
Talos
Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader↗2021-07-27
▶
Talos
Vulnerability Spotlight: Use-after-free vulnerabilities in Foxit PDF Reader↗2021-07-27
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Threat Intel
UNC5330
▶
CVE-2021-21893 — Use After Free in Foxit Reader | cvebase