PT-2023-19803 · Riot-Os · Riot-Os

Scepticz + 1 · Published 2023-04-24 · Updated 2023-05-03 · CVE-2023-24821

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions RIOT-OS versions prior to 2022.10

Description The issue concerns a network stack in RIOT-OS, an operating system for Internet of Things devices, which can process 6LoWPAN frames. An attacker can send a crafted frame, resulting in a large out of bounds write beyond the packet buffer. This write creates a hard fault exception after reaching the last page of RAM, and since the hard fault is not handled, the system becomes stuck until reset, leading to a denial of service.

Recommendations For versions prior to 2022.10, update to version 2022.10 to resolve the issue. As a temporary workaround, consider disabling support for fragmented IP datagrams until the update is applied. Alternatively, apply the patches manually to fix the issue.

Exploit

Fix

Integer Underflow

Memory Corruption

Weakness Enumeration

CWE-191

CWE-787

Related Identifiers

CVE-2023-24821

GHSA-2FPR-82XR-P887

Affected Products

Riot-Os

References · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/24xxx/CVE-2023-24821.json · Exploit
• https://github.com/RIOT-OS/RIOT/pull/18820/commits/bd31010231f5340e21410595dd95afc86bbfd341 · Patch
• https://github.com/RIOT-OS/RIOT/pull/18817/commits/9728f727e75d7d78dbfb5918e0de1b938b7b6d2c · Patch
• https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-2fpr-82xr-p887 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-24821 · Security Note
• https://osv.dev/vulnerability/CVE-2023-24821 · Vendor Advisory
• https://t.me/cvenotify/48968 · Telegram Post
• https://t.me/cvenotify/49739 · Telegram Post
• https://t.me/cibsecurity/62732 · Telegram Post