Vulnerability · Published May 3, 2022 · Assigned by icscert
CVE-2021-27439TencentOS-tiny Integer Overflow or Wraparound
High 7.3
In plain English
A high-severity integer overflow in TencentOS-tiny from TencentOS-tiny. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 75% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.6%top 24.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TencentOS-tiny | TencentOS-tiny | 3.1.0 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 x_refsource_CONFIRM