CVE-2021-27439
Last modified
CVE-2021-27439 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. TencentOS-tiny version 3.1.0 is vulnerable to integer wrap-around in function 'tos_mmheap_alloc incorrect calculation of effective memory allocation size. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.. EPSS estimates a 1.35% chance of exploitation in the next 30 days.
Description
TencentOS-tiny version 3.1.0 is vulnerable to integer wrap-around in function 'tos_mmheap_alloc incorrect calculation of effective memory allocation size. This improper memory assignment 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 |
|---|---|---|
| Tencent | Tencentos-Tiny | 3.1.0 |
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party Advisory, US Government Resource
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
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