CVE-2024-32018
If assertions are the only line of defense against untrusted input, the software may be exposed to attacks that leverage the lack of proper input checks.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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. Most codebases define assertion macros which compile to a no-op on non-debug builds. If assertions are the only line of defense against untrusted input, the software may be exposed to attacks that leverage the lack of proper input checks. In detail, in the `nimble_scanlist_update()` function below, `len` is checked in an assertion and subsequently used in a call to `memcpy()`. If an attacker is able to provide a larger `len` value while assertions are compiled-out, they can write past the end of the fixed-length `e->ad` buffer. If the unchecked input above is attacker-controlled and crosses a security boundary, the impact of the buffer overflow vulnerability could range from denial of service to arbitrary code execution. This issue has not yet been patched. Users are advised to add manual `len` checking.
- CVSS 3.1
- 9.0 CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.53% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- riot-os/riot
- Source
- security-advisories@github.com
References
- http://seclists.org/fulldisclosure/2024/May/7Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/05/07/3Mailing List, Third Party Advisory
- https://github.com/RIOT-OS/RIOT/blob/master/pkg/nimble/scanlist/nimble_scanlist.c#L74-L87Product
- https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-899m-q6pp-hmp3Exploit, Vendor Advisory
- http://seclists.org/fulldisclosure/2024/May/7Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2024/05/07/3Mailing List, Third Party Advisory
- https://github.com/RIOT-OS/RIOT/blob/master/pkg/nimble/scanlist/nimble_scanlist.c#L74-L87Product
- https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-899m-q6pp-hmp3Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.