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.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

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

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

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
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 (hide)

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

History

21 Nov 2024, 06:10

Type	Values Removed	Values Added
References	~~() https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= - Vendor Advisory~~	() https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= - Vendor Advisory
References	~~() https://www.tenable.com/security/research/tra-2021-47 - Exploit, Third Party Advisory~~	() https://www.tenable.com/security/research/tra-2021-47 - Exploit, Third Party Advisory

Information

Published : 2021-10-26 10:15

Updated : 2024-11-21 06:10

NVD link : CVE-2021-34585

Mitre link : CVE-2021-34585

CVE.ORG link : CVE-2021-34585

JSON object : View

Products Affected

codesys

codesys

CWE

CWE-252

Unchecked Return Value

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