Samsung Exynos Modem 5300 LTE improper authorization

Summaryinfo

A vulnerability has been found in Samsung Exynos 9820, Exynos 9825, Exynos 980, Exynos 990, Exynos 850, Exynos 1080, Exynos 2100, Exynos 2200, Exynos 1280, Exynos 1380, Exynos 1330, Exynos 9110, Exynos W920, Exynos W930, Exynos Modem 5123 and Exynos Modem 5300 and classified as critical. This impacts an unknown function of the component LTE. The manipulation leads to improper authorization. This vulnerability is uniquely identified as CVE-2024-29153. No exploit exists.

Detailsinfo

A vulnerability was found in Samsung Exynos 9820, Exynos 9825, Exynos 980, Exynos 990, Exynos 850, Exynos 1080, Exynos 2100, Exynos 2200, Exynos 1280, Exynos 1380, Exynos 1330, Exynos 9110, Exynos W920, Exynos W930, Exynos Modem 5123 and Exynos Modem 5300. It has been rated as critical. This issue affects an unknown part of the component LTE. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability was discovered in Samsung Mobile Processor, Wearable Processor, and Modems with versions Exynos 9820, Exynos 9825, Exynos 980, Exynos 990, Exynos 850, Exynos 1080, Exynos 2100, Exynos 2200, Exynos 1280, Exynos 1380, Exynos 1330, Exynos 9110, Exynos W920, Exynos W930, Exynos Modem 5123, and Exynos Modem 5300 that involves incorrect autorization of LTE NAS messages and leads to downgrading to lower network generations and repeated DDOS.

The advisory is shared at semiconductor.samsung.com. The identification of this vulnerability is CVE-2024-29153 since 03/18/2024. The exploitation is known to be easy. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/14/2025). MITRE ATT&CK project uses the attack technique T1548.002 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-2024-26187). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Samsung

Name

• Exynos 850
• Exynos 980
• Exynos 990
• Exynos 1080
• Exynos 1280
• Exynos 1330
• Exynos 1380
• Exynos 2100
• Exynos 2200
• Exynos 9110
• Exynos 9820
• Exynos 9825
• Exynos Modem 5123
• Exynos Modem 5300
• Exynos W920
• Exynos W930

License

• commercial

Website

• Vendor: https://www.samsung.com/

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