VDB-229059 · CVE-2023-31621 · Issue 1130

openlink virtuoso-opensource 7.2.9 kc_var_col denial of service

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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in openlink virtuoso-opensource 7.2.9. It has been classified as problematic. The affected element is an unknown function of the component kc_var_col. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2023-31621. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in openlink virtuoso-opensource 7.2.9. This affects an unknown code block of the component kc_var_col. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

An issue in the kc_var_col component of openlink virtuoso-opensource v7.2.9 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

The weakness was shared 05/15/2023 as 1130. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-31621 since 04/29/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

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-2023-35917). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

openlink

Name

virtuoso-opensource

Version

7.2.9

License

open-source

Website

Product: https://github.com/openlink/virtuoso-opensource/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
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: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/29/2023 🔍
05/15/2023 +16 days 🔍
05/15/2023 +0 days 🔍
12/27/2025 +957 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1130
Status: Confirmed

CVE: CVE-2023-31621 (🔍)
GCVE (CVE): GCVE-0-2023-31621
GCVE (VulDB): GCVE-100-229059
EUVD: 🔍

Entryinfo

Created: 05/15/2023 21:20
Updated: 12/27/2025 15:21
Changes: 05/15/2023 21:20 (39), 06/09/2023 08:43 (11), 01/24/2025 16:36 (26), 12/27/2025 15:21 (1)
Complete: 🔍
Cache ID: 216::103

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