VDB-238587 · CVE-2023-36326 · EUVD-2023-40294

RELIC bn_grow 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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in RELIC. This affects the function bn_grow. Performing a manipulation results in denial of service. This vulnerability is reported as CVE-2023-36326. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in RELIC (version now known). It has been classified as problematic. This affects the function bn_grow. 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:

Integer Overflow vulnerability in RELIC before commit 34580d840469361ba9b5f001361cad659687b9ab, allows attackers to execute arbitrary code, cause a denial of service, and escalate privileges when calling realloc function in bn_grow function.

The weakness was disclosed 09/01/2023 as 34580d840469361ba9b5f001361cad659687b9ab. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-36326 since 06/21/2023. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 34580d840469361ba9b5f001361cad659687b9ab 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 EUVD (EUVD-2023-40294). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

RELIC

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD 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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 34580d840469361ba9b5f001361cad659687b9ab

Timelineinfo

06/21/2023 🔍
09/01/2023 +72 days 🔍
09/01/2023 +0 days 🔍
01/13/2026 +865 days 🔍

Sourcesinfo

Advisory: 34580d840469361ba9b5f001361cad659687b9ab
Status: Confirmed

CVE: CVE-2023-36326 (🔍)
GCVE (CVE): GCVE-0-2023-36326
GCVE (VulDB): GCVE-100-238587
EUVD: 🔍

Entryinfo

Created: 09/01/2023 21:30
Updated: 01/13/2026 19:05
Changes: 09/01/2023 21:30 (40), 09/29/2023 14:28 (11), 01/13/2026 19:05 (16)
Complete: 🔍
Cache ID: 216::103

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