RIOT-OS vulnerable to Packet Type Confusion during IPHC send

RIOT-OS, an operating system that supports Internet of Things devices, contains a network stack with the ability to process 6LoWPAN frames. Prior to version 2022.10, an attacker can send a crafted frame to the device resulting in a type confusion between IPv6 extension headers and a UDP header. This occurs while encoding a 6LoWPAN IPHC header. The type confusion manifests in an out of bounds write in the packet buffer. The overflow can be used to corrupt other packets and the allocator metadata. Corrupting a pointer will easily lead to denial of service. While carefully manipulating the allocator metadata gives an attacker the possibility to write data to arbitrary locations and thus execute arbitrary code. Version 2022.10 fixes this issue. As a workaround, apply the patches manually.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

跨界内存写

RIOT RIOT-OS 安全漏洞

RIOT RIOT-OS是一套应用于物联网领域的操作系统。 RIOT RIOT-OS 2022.10 之前版本存在安全漏洞，攻击者利用该漏洞可以设备发送精心制作的帧，从而导致 IPv6 扩展标头和 UDP 标头之间的类型混淆，在编码 6LoWPAN IPHC 标头时会发生这种情况，类型混淆表现为数据包缓冲区中的越界写入，溢出可用于破坏其他数据包和分配器元数据， 损坏指针很容易导致拒绝服务。

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