CVE Vulnerability

CVE-2021-34585

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an invalid address can occur. This leads to a denial of service situation.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= Vendor Advisory
https://www.tenable.com/security/research/tra-2021-47 Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:codesys:codesys:*:*:*:*:*:*:*:*
Information

Published : 2021-10-26 10:15

Updated : 2021-11-23 08:32

NVD link : CVE-2021-34585

Mitre link : CVE-2021-34585

Products Affected
No products.
CWE
CWE-252

Unchecked Return Value