CVE-2021-31227
High
Description
An issue was discovered in HCC embedded InterNiche 4.0.1. A potential heap buffer overflow exists in the code that parses the HTTP POST request, due to an incorrect signed integer comparison. This vulnerability requires the attacker to send a malformed HTTP packet with a negative Content-Length, which bypasses the size checks and results in a large heap overflow in the wbs_multidata buffer copy.
SeverityHigh
CVSS7.5
Exploit probability—
ProductHcc-embedded Nichestack
PublishedAug 19, 2021
First seenAug 19, 2021
How to fix
Update
- hcc-embedded nichestack4.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hcc-embedded nichestack | v < 4.3 | 4.3 |
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