Vulnerability Monitor

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CVE-2021-27393

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.

Published

2021-04-22T21:15:10.393

Last Modified

2024-11-21T05:57:54.343

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-330
  • Type: Secondary
    CWE-330
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application siemens nucleus_net * Yes
Application siemens nucleus_readystart_v3 < 2013.08 Yes
Application siemens nucleus_source_code - Yes
References