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CVE-2021-27393

Common vulnerabilities & exposures (CVE)

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Published at: - 22-04-2021 11:15
Last modified: - 22-04-2022 09:38
Total changes: - 5

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Low
Attack complexity
Network
Attack vector
None
Availability
None
Confidentiality
Low
Integrity
None
Privileges required
Unchanged
Scope
None
User interaction
5.3
Base score
3.9
1.4
Exploitability score
Impact score
 

Verification logic

OR
vendor=siemens AND product=nucleus_net
vendor=siemens AND product=nucleus_readystart_v3 AND versionEndExcluding=2013.08
vendor=siemens AND product=nucleus_source_code AND version=-
 

Reference

 


Keywords

NVD

 

CVE-2021-27393

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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