SumatraPDF Reader 3.4.6 Text File buffer overflow

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.
4.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in SumatraPDF Reader 3.4.6. This vulnerability affects unknown code of the component Text File Handler. Executing a manipulation can lead to buffer overflow. This vulnerability is handled as CVE-2023-33802. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in SumatraPDF Reader 3.4.6. It has been declared as critical. This vulnerability affects an unknown part of the component Text File Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability. CVE summarizes:

A buffer overflow in SumatraPDF Reader v3.4.6 allows attackers to cause a Denial of Service (DoS) via a crafted text file.

The weakness was released 07/27/2023. The advisory is available at github.com. This vulnerability was named CVE-2023-33802 since 05/22/2023. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/06/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-37953). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/22/2023 🔍
07/27/2023 +66 days 🔍
07/27/2023 +0 days 🔍
01/06/2026 +894 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2023-33802 (🔍)
GCVE (CVE): GCVE-0-2023-33802
GCVE (VulDB): GCVE-100-235546
EUVD: 🔍

Entryinfo

Created: 07/27/2023 06:59
Updated: 01/06/2026 16:34
Changes: 07/27/2023 06:59 (38), 08/20/2023 07:56 (11), 01/06/2026 16:34 (16)
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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