VDB-182284 · CVE-2021-40812 · Nessus 278742

libgd GD Graphics Library up to 2.3.2 gdGetBuf/gdPutBuf out-of-bounds

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.
5.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in libgd GD Graphics Library up to 2.3.2 and classified as problematic. This vulnerability affects the function gdGetBuf/gdPutBuf. Executing a manipulation can lead to out-of-bounds. The identification of this vulnerability is CVE-2021-40812. The attack may be launched remotely. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in libgd GD Graphics Library up to 2.3.2 (Image Processing Software). It has been declared as problematic. This vulnerability affects the function gdGetBuf/gdPutBuf. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality.

The weakness was shared 09/09/2021. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-40812. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 278742 (Debian dla-4411 : libgd-dev - security update), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (278742). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Image Processing Software

Vendor

libgd

Name

GD Graphics Library

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA 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
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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

Nessus ID: 278742
Nessus Name: Debian dla-4411 : libgd-dev - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

09/08/2021 🔍
09/09/2021 +1 days 🔍
09/09/2021 +0 days 🔍
12/16/2025 +1559 days 🔍

Sourcesinfo

Advisory: 6f5136821be86e7068fcdf651ae9420b5d42e9a9
Status: Confirmed

CVE: CVE-2021-40812 (🔍)
GCVE (CVE): GCVE-0-2021-40812
GCVE (VulDB): GCVE-100-182284

Entryinfo

Created: 09/09/2021 14:40
Updated: 12/16/2025 23:56
Changes: 09/09/2021 14:40 (45), 09/11/2021 14:09 (3), 10/29/2024 16:50 (42), 05/03/2025 12:14 (3), 12/16/2025 23:56 (2)
Complete: 🔍
Cache ID: 216::103