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CVE-2023-26076

Status Candidate

Overview

An issue was discovered in Samsung Mobile Chipset and Baseband Modem Chipset for Exynos 1280, Exynos 2200, Exynos Modem 5123, Exynos Modem 5300, and Exynos Auto T5123. An intra-object overflow in the 5G SM message codec can occur due to insufficient parameter validation when decoding reserved options.

Related Files

Shannon Baseband NrSmPcoCodec Intra-Object Overflow
Posted Mar 20, 2023
Authored by Ivan Fratric, Google Security Research

There is an intra-object overflow in Shannon Baseband, inside the 5G SM protocol implementation (NrSmMsgCodec as it is called in Shannon according to debug strings), when decoding the Extended protocol configuration options message (IEI = 0x7B).

tags | exploit, overflow, protocol
advisories | CVE-2023-26076
SHA-256 | fbcb90e472d2e3ece0a5999daefccbac91cb16b93b5bdde7163bb7f5b46c8021
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