What is the CVSS score of CVE-2024-32017?

CVE-2024-32017 has a CVSS 3.1 base score of 9.0 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 1.5%.

Is there a public PoC exploit available for CVE-2024-32017?

Yes, a public proof-of-concept exploit is available for CVE-2024-32017. Prioritise patching immediately. EPSS: 1.5%.

Riot CVE-2024-32017

CRITICAL

Classic Buffer Overflow (CWE-120)

2024-05-01 security-advisories@github.com

Buffer Overflow RCE Denial Of Service Riot

9.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.0 CRITICAL

AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 01, 2024 - 07:15 nvd

CRITICAL 9.0

DescriptionNVD

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.

AnalysisAI

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. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. 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. Affected products include: Riot-Os Riot.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.