Foxit Reader 9.1.0.5096 Javascript Engine PDF Document use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Foxit Reader 9.1.0.5096. Affected by this issue is some unknown functionality of the component Javascript Engine. Executing a manipulation as part of PDF Document can lead to use after free. This vulnerability is registered as CVE-2018-3939. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Foxit Reader 9.1.0.5096 (Document Reader Software) and classified as critical. This vulnerability affects some unknown functionality of the component Javascript Engine. The manipulation as part of a PDF Document leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The bug was discovered 07/19/2018. The weakness was published 08/01/2018 (Website). The advisory is available at talosintelligence.com. This vulnerability was named CVE-2018-3939 since 01/01/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 111377 (Foxit Reader < 9.2 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371092 (Foxit Reader and PhantomPDF Use-After-Free Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111377). Similar entries are available at VDB-122024, VDB-122529, VDB-124775 and VDB-124776. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 8.0
CNA Vector (Talos): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 111377
Nessus Name: Foxit Reader < 9.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/01/2018 🔍
07/19/2018 +198 days 🔍
07/19/2018 +0 days 🔍
07/27/2018 +8 days 🔍
08/01/2018 +4 days 🔍
08/01/2018 +0 days 🔍
08/02/2018 +1 days 🔍
04/29/2023 +1731 days 🔍

Sourcesinfo

Vendor: foxitsoftware.com

Advisory: talosintelligence.com
Status: Not defined

CVE: CVE-2018-3939 (🔍)
GCVE (CVE): GCVE-0-2018-3939
GCVE (VulDB): GCVE-100-122530
See also: 🔍

Entryinfo

Created: 08/02/2018 08:07
Updated: 04/29/2023 10:41
Changes: 08/02/2018 08:07 (70), 03/12/2020 17:45 (3), 04/29/2023 10:41 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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