Samsung Auto T5123 NAS Module 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.
4.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Samsung Mobile Processor, Automotive Processor, Modem Exynos 9820, Modem Exynos 9825, Modem Exynos 980, Modem Exynos 990, Modem Exynos 850, Modem Exynos 1080, Modem Exynos 2100, Modem Exynos 2200, Modem Exynos 1280, Modem Exynos 1380, Modem Exynos 1330, Modem 5123, Modem 5300 and Auto T5123. Impacted is an unknown function of the component NAS Module. This manipulation causes denial of service. This vulnerability is tracked as CVE-2023-50803. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Samsung Mobile Processor, Automotive Processor, Modem Exynos 9820, Modem Exynos 9825, Modem Exynos 980, Modem Exynos 990, Modem Exynos 850, Modem Exynos 1080, Modem Exynos 2100, Modem Exynos 2200, Modem Exynos 1280, Modem Exynos 1380, Modem Exynos 1330, Modem 5123, Modem 5300 and Auto T5123. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component NAS Module. 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. The summary by CVE is:

An issue was discovered in Samsung Mobile Processor, Automotive Processor, and Modem Exynos 9820, 9825, 980, 990, 850, 1080, 2100, 2200, 1280, 1380, 1330, Modem 5123, Modem 5300, and Auto T5123. The baseband software does not properly check replay protection specified by the NAS (Non-Access-Stratum) module. This can lead to denial of service.

The advisory is shared at semiconductor.samsung.com. This vulnerability is known as CVE-2023-50803 since 12/14/2023. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

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-2023-55536). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 3.7
CNA Vector (MITRE): 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/14/2023 🔍
06/05/2024 +173 days 🔍
06/05/2024 +0 days 🔍
03/05/2026 +638 days 🔍

Sourcesinfo

Vendor: samsung.com

Advisory: semiconductor.samsung.com
Status: Confirmed

CVE: CVE-2023-50803 (🔍)
GCVE (CVE): GCVE-0-2023-50803
GCVE (VulDB): GCVE-100-267217
EUVD: 🔍

Entryinfo

Created: 06/05/2024 21:47
Updated: 03/05/2026 13:17
Changes: 06/05/2024 21:47 (61), 06/06/2024 16:46 (1), 06/18/2024 19:06 (11), 03/05/2026 13:17 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!