CVE-2023-28613

Vulnerability

CVE-2023-28613 is an integer overflow vulnerability in IPv4 fragment handling within the Samsung Exynos Mobile Processor and Baseband Modem Processor. The flaw occurs due to insufficient parameter validation when reassembling fragmented IPv4 packets, leading to a miscalculation during fragment processing. Affected chipsets include Exynos 1280, Exynos 2200, and Exynos Modem 5300 [1][4]. The code path is reachable when the baseband modem processes inbound fragmented IP traffic.

Exploitation

An attacker with network-level access can send a series of specially crafted fragmented IPv4 packets to the target device. No authentication or user interaction is required; the vulnerability is directly triggered in the baseband firmware during reassembly. The insufficient validation of fragment parameters causes an integer overflow, which may lead to incorrect memory operations [4].

Impact

Successful exploitation can result in denial of service (device crash or baseband hang) or potential memory corruption. Depending on the heap state and memory layout, this could be leveraged for further compromise, though the primary known outcome is instability or crash of the modem subsystem [1][4].

Mitigation

Samsung has published a security advisory on its product security update portal, but no specific patch version or release date is disclosed in the available references. Users should apply any available firmware updates from their device manufacturers as soon as they are released. Until a fix is applied, reducing exposure to untrusted networks may mitigate the risk [1].