CVE-2021-27393

CWE-3303 documents3 sources
Severity
5.3MEDIUM
EPSS
0.2%
top 55.65%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Siemens Nucleus Readystart V3Siemens Nucleus NETSiemens Nucleus Source Code
Timeline
PublishedApr 22
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages4 packages

▶CVEListV5siemens/nucleus_source_codeVersions including affected DNS modules
▶CVEListV5siemens/nucleus_readystart_v3All versions < V2013.08
▶CVEListV5siemens/nucleus_netAll versions

🔴Vulnerability Details

2
GHSA
GHSA-x7x4-r59j-h6w9: A vulnerability has been identified in Nucleus NET (All versions), Nucleus RTOS (versions including affected DNS modules), Nucleus ReadyStart (All ver↗2022-05-24
▶
CVEList
CVE-2021-27393: A vulnerability has been identified in Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2013↗2021-04-22
▶
CVE-2021-27393 (MEDIUM CVSS 5.3) | A vulnerability has been identified | cvebase.io