VDB-227538 · CVE-2023-26938 · EUVD-2023-30729

Xpdf 4.04 goo/gfile.cc viaSharedFile::readBlock 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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Xpdf 4.04. This vulnerability affects the function viaSharedFile::readBlock of the file goo/gfile.cc. The manipulation results in buffer overflow. This vulnerability was named CVE-2023-26938. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Xpdf 4.04 (Document Reader Software). Affected is the function viaSharedFile::readBlock of the file goo/gfile.cc. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Buffer Overflow vulnerability found in XPDF v.4.04 allows an attacker to cause a Denial of Service viaSharedFile::readBlock located in goo/gfile.cc.

The weakness was presented 04/27/2023. The advisory is available at gist.github.com. This vulnerability is traded as CVE-2023-26938 since 02/27/2023. Technical details are known, but there is no available exploit.

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-2023-30729). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Document Reader Software

Name

Xpdf

Version

4.04

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: Partially

Availability: 🔍
Status: Not defined
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/27/2023 🔍
04/26/2023 +58 days 🔍
04/27/2023 +0 days 🔍
11/13/2025 +931 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2023-26938 (🔍)
GCVE (CVE): GCVE-0-2023-26938
GCVE (VulDB): GCVE-100-227538
EUVD: 🔍

Entryinfo

Created: 04/27/2023 01:39
Updated: 11/13/2025 06:28
Changes: 04/27/2023 01:39 (39), 05/20/2023 17:04 (10), 11/13/2025 06:28 (16)
Complete: 🔍
Cache ID: 216::103

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