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CVE-2024-32017

Status Candidate

Overview

RIOT is a real-time multi-threading operating system that supports a range of devices that are typically 8-bit, 16-bit and 32-bit microcontrollers. The size check in the `gcoap_dns_server_proxy_get()` function contains a small typo that may lead to a buffer overflow in the subsequent `strcpy()`. In detail, the length of the `_uri` string is checked instead of the length of the `_proxy` string. The `_gcoap_forward_proxy_copy_options()` function does not implement an explicit size check before copying data to the `cep->req_etag` buffer that is `COAP_ETAG_LENGTH_MAX` bytes long. If an attacker can craft input so that `optlen` becomes larger than `COAP_ETAG_LENGTH_MAX`, they can cause a buffer overflow. If the input above is attacker-controlled and crosses a security boundary, the impact of the buffer overflow vulnerabilities could range from denial of service to arbitrary code execution. This issue has yet to be patched. Users are advised to add manual bounds checking.

Related Files

RIOT 2024.01 Buffer Overflows / Lack Of Size Checks / Out-Of-Bound Access
Posted May 9, 2024
Authored by Marco Ivaldi

RIOT versions 2024.01 and below suffers from multiple buffer overflows, ineffective size checks, and out-of-bounds memory access vulnerabilities.

tags | exploit, overflow, vulnerability
advisories | CVE-2024-31225, CVE-2024-32017, CVE-2024-32018
SHA-256 | 43c245ca872e84173b6225084f324209f789f4e49b0b9c392d621feab1e1de58
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