CVE-2021-27427

Published on: Not Yet Published

Last Modified on: 05/12/2022 04:29:00 PM UTC

CVE-2021-27427

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

Certain versions of Riot from Riot-os contain the following vulnerability:

RIOT OS version 2020.01.1 is vulnerable to integer wrap-around in its implementation of calloc function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

CVE-2021-27427 has been assigned by [email protected] to track the vulnerability - currently rated as CRITICAL severity.
Affected Vendor/Software: RIOT OS - RIOT OS version = 2020.01.1

CVSS3 Score: 9.8 - CRITICAL

Attack Vector ^ⓘ	Attack Complexity	Privileges Required	User Interaction
NETWORK	LOW	NONE	NONE
Scope	Confidentiality Impact	Integrity Impact	Availability Impact
UNCHANGED	HIGH	HIGH	HIGH

CVSS2 Score: 7.5 - HIGH

Access Vector^ⓘ	Access Complexity	Authentication
NETWORK	LOW	NONE
Confidentiality Impact	Integrity Impact	Availability Impact
PARTIAL	PARTIAL	PARTIAL

CVE References

Description	Tags ^ⓘ	Link
Multiple RTOS (Update D) \| CISA	www.cisa.gov text/html	CONFIRM www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
GitHub - RIOT-OS/RIOT: RIOT - The friendly OS for IoT	github.com text/html	CONFIRM github.com/RIOT-OS/RIOT

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There are currently no QIDs associated with this CVE

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Riot-os	Riot	2020.01.1	All	All	All

cpe:2.3:o:riot-os:riot:2020.01.1:*:*:*:*:*:*:*:

Discovery Credit

David Atch, Omri Ben Bassat, and Tamir Ariel from Microsoft Section 52, and the Azure Defender for IoT research group reported these vulnerabilities to CISA.

Social Mentions

Source	Title	Posted (UTC)
@management_sun	IT Risk: 各製品で使用されているReal-time Operating Systems (RTOS) productsにCVSS v3=9.8の脆弱性 -3/4 CVE-2021-27427 CVE-2021-27425… twitter.com/i/web/status/1…	2021-12-01 02:07:45
@CVEreport	CVE-2021-27427 : RIOT OS version 2020.01.1 is vulnerable to integer wrap-around in its implementation of calloc fun… twitter.com/i/web/status/1…	2022-05-03 21:12:04
@Robo_Alerts	Potentially Critical CVE Detected! CVE-2021-27427 RIOT OS version 2020.01.1 is vulnerable to integer wrap-around in… twitter.com/i/web/status/1…	2022-05-03 21:56:03
@wvdsteen	New vulnerability on the NVD: CVE-2021-27427 ift.tt/xQJjAuK May 04, 2022 at 09:15AM	2022-05-03 22:16:55
@workentin	New vulnerability on the NVD: CVE-2021-27427 ift.tt/xQJjAuK	2022-05-03 22:40:32
@xanadulinux	CVE-2021-27427 ift.tt/xQJjAuK	2022-05-03 22:53:29
/r/netcve	CVE-2021-27427	2022-05-03 21:38:40