CVE-2021-27393
Medium
Description
A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2013.08), Nucleus Source Code (Versions including affected DNS modules). The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS cache or spoof DNS resolving.
SeverityMedium
CVSS5.3
Exploit probability—
ProductSiemens Nucleus Net
PublishedApr 22, 2021
First seenApr 22, 2021
Weakness typeCWE-330CWE-330
How to fix
Update
- siemens nucleus_readystart_v32013.08 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| siemens nucleus_net | No range specified | — |
| siemens nucleus_readystart_v3 | v < 2013.08 | 2013.08 |
| siemens nucleus_source_code | No range specified | — |
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