VDB-249580 · CVE-2023-50020 · Issue 2734

Open5GS 2.6.6 AMF 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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Open5GS 2.6.6. Affected by this issue is some unknown functionality of the component AMF. Executing a manipulation can lead to denial of service. This vulnerability is registered as CVE-2023-50020. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic was found in Open5GS 2.6.6. This vulnerability affects some unknown functionality of the component AMF. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

An issue was discovered in open5gs v2.6.6. SIGPIPE can be used to crash AMF.

The weakness was published 01/03/2024 as 2734. The advisory is shared for download at github.com. This vulnerability was named CVE-2023-50020 since 12/04/2023. There are neither technical details nor an exploit publicly available.

Applying the patch 1aba814938e3a1b2eec7014bf6ce132d34622e08 is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Open5GS

Version

2.6.6

License

open-source

Website

Product: https://github.com/open5gs/open5gs/

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

NVD Base Score: 7.5
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: 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: 1aba814938e3a1b2eec7014bf6ce132d34622e08

Timelineinfo

12/04/2023 🔍
01/03/2024 +30 days 🔍
01/03/2024 +0 days 🔍
06/18/2025 +532 days 🔍

Sourcesinfo

Product: github.com

Advisory: 2734
Status: Confirmed

CVE: CVE-2023-50020 (🔍)
GCVE (CVE): GCVE-0-2023-50020
GCVE (VulDB): GCVE-100-249580

Entryinfo

Created: 01/03/2024 09:50
Updated: 06/18/2025 20:34
Changes: 01/03/2024 09:50 (40), 01/23/2024 12:30 (11), 06/18/2025 20:34 (17)
Complete: 🔍
Cache ID: 216::103