VDB-178232 · CVE-2021-33792 · GCVE-0-2021-33792

Foxit Reader/PhantomPDF up to 10.1.3 Trailer Dictionary out-of-bounds write

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Foxit Reader and PhantomPDF up to 10.1.3. Affected is an unknown function of the component Trailer Dictionary Handler. Such manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2021-33792. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Foxit Reader and PhantomPDF up to 10.1.3 (Document Reader Software) and classified as critical. Affected by this issue is an unknown code block of the component Trailer Dictionary Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 07/10/2021. The advisory is shared for download at foxitsoftware.com. This vulnerability is handled as CVE-2021-33792. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 10.1.4 eliminates this vulnerability.

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Productinfo

Type

Document Reader Software

Vendor

Foxit

Name

Version

License

free

Website

Vendor: https://www.foxitsoftware.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Reader/PhantomPDF 10.1.4

Timelineinfo

06/01/2021 🔍
07/10/2021 +39 days 🔍
07/10/2021 +0 days 🔍
07/15/2021 +5 days 🔍

Sourcesinfo

Vendor: foxitsoftware.com

Advisory: foxitsoftware.com
Status: Confirmed

CVE: CVE-2021-33792 (🔍)
GCVE (CVE): GCVE-0-2021-33792
GCVE (VulDB): GCVE-100-178232

Entryinfo

Created: 07/10/2021 09:22
Updated: 07/15/2021 06:55
Changes: 07/10/2021 09:22 (39), 07/15/2021 06:44 (5), 07/15/2021 06:55 (18)
Complete: 🔍
Cache ID: 216::103