High severity · published Aug 1, 2018
CVE-2018-3939
An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096
8.8
CVSS
2.3%
EPSS
No
On KEV
Description
An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Software's PDF Reader, version 9.1.0.5096. A specially crafted PDF document can trigger a previously freed object in memory to be reused, resulting in arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. If the browser plugin extension is enabled, visiting a malicious site can also trigger the vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Foxit · Foxit
Foxit Software Foxit PDF Reader 9.1.0.5096 · source: vendor
FR
Foxit Reader · Foxitsoftware
through 9.1.0.5096 · source: NVD
PH
Phantompdf · Foxitsoftware
through 9.1.0.5096 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-3939
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-3939
Exploit
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0606
Patch
https://www.foxitsoftware.com/support/security-bulletins.php
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