CVE-2021-27427
Last modified
CVE-2021-27427 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.46% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Riot-Os | Riot | 2020.01.1 |
References
- https://github.com/RIOT-OS/RIOTProduct, Third Party Advisory
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party Advisory, US Government Resource
- https://github.com/RIOT-OS/RIOTProduct, Third Party Advisory
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-27427?
How severe is CVE-2021-27427?
How do I fix CVE-2021-27427?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-27420GE UR firmware versions prior to version 8.1x web server tas…5.3
- CVE-2021-27421NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to…9.8
- CVE-2021-27422GE UR firmware versions prior to version 8.1x web server int…7.5
- CVE-2021-27424GE UR firmware versions prior to version 8.1x shares MODBUS …5.3
- CVE-2021-27425Cesanta Software Mongoose-OS v2.17.0 is vulnerable to intege…9.8
- CVE-2021-27426GE UR IED firmware versions prior to version 8.1x with “Basi…9.8
- CVE-2021-27428GE UR IED firmware versions prior to version 8.1x supports u…9.8
- CVE-2021-27429 Texas Instruments TI-RTOS returns a valid pointer to a smal…7.8
- CVE-2021-27430GE UR bootloader binary Version 7.00, 7.01 and 7.02 included…6.8
- CVE-2021-27431ARM CMSIS RTOS2 versions prior to 2.1.3 are vulnerable to in…9.8
- CVE-2021-27432OPC Foundation UA .NET Standard versions prior to 1.4.365.48…7.5
- CVE-2021-27433ARM mbed-ualloc memory library version 1.3.0 is vulnerable t…9.8
Are you affected by CVE-2021-27427?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST