CVE-2021-31228
High
Description
An issue was discovered in HCC embedded InterNiche 4.0.1. This vulnerability allows the attacker to predict a DNS query's source port in order to send forged DNS response packets that will be accepted as valid answers to the DNS client's requests (without sniffing the specific request). Data is predictable because it is based on the time of day, and has too few bits.
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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