CVE-2018-3943

HIGHCVSS 8.8/10EPSS 2.58%

Last modified

CVE-2018-3943 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 2.58% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability
2.58%

83.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FoxitsoftwarePhantompdf<= 9.2.0.9297
FoxitsoftwareReader<= 9.2.0.9297

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-3943?
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.
How severe is CVE-2018-3943?
CVE-2018-3943 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.58% probability of exploitation in the next 30 days.
How do I fix CVE-2018-3943?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-3943?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST