Graphviz Graph Visualization Tools lib/common/shapes.c buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Graphviz Graph Visualization Tools. It has been classified as critical. This affects an unknown function in the library lib/common/shapes.c. The manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2020-18032. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Graphviz Graph Visualization Tools (unknown version). It has been rated as critical. This issue affects an unknown code block in the library lib/common/shapes.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 04/30/2021. It is possible to read the advisory at gitlab.com. The identification of this vulnerability is CVE-2020-18032. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 276123 (TencentOS Server 3: graphviz (TSSA-2023:0148)), which helps to determine the existence of the flaw in a target environment.

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 Tenable (276123). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

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

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 276123
Nessus Name: TencentOS Server 3: graphviz (TSSA-2023:0148)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/13/2020 🔍
04/30/2021 +260 days 🔍
04/30/2021 +0 days 🔍
11/24/2025 +1669 days 🔍

Sourcesinfo

Advisory: gitlab.com
Status: Not defined

CVE: CVE-2020-18032 (🔍)
GCVE (CVE): GCVE-0-2020-18032
GCVE (VulDB): GCVE-100-174347

Entryinfo

Created: 04/30/2021 07:02
Updated: 11/24/2025 13:31
Changes: 04/30/2021 07:02 (35), 05/03/2021 17:17 (2), 11/24/2025 13:31 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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