CVE-2020-27009

A vulnerability has been identified in Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules). The DNS domain name record decompression functionality does not properly validate the pointer offset values. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf	Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-04	Third Party Advisory US Government Resource

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:siemens:nucleus_net::::::::
	cpe:2.3:a:siemens:nucleus_source_code:-:::::::*

Information

Published : 2021-04-22 14:15

Updated : 2022-08-05 10:13

NVD link : CVE-2020-27009

Mitre link : CVE-2020-27009

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

siemens

nucleus_source_code
nucleus_net

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