CVE-2021-27439 — HIGH (7.3)

Vulnerability 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.

CVSS Score

7.3

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Tencent	Tencentos-Tiny	3.1.0

Related Weaknesses (CWE)

CWE-190

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party AdvisoryUS Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party AdvisoryUS Government Resource

FAQ

What is CVE-2021-27439?

CVE-2021-27439 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 a...

How severe is CVE-2021-27439?

CVE-2021-27439 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-27439?

Check the references section above for vendor advisories and patch information. Affected products include: Tencent Tencentos-Tiny.