CVE-2021-34585

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.5 /10

CVSS v3 : 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

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

17 Nov 2021, 22:18

Type Values Removed Values Added
CWE CWE-754 CWE-252

10 Nov 2021, 01:17

Type Values Removed Values Added
CWE CWE-252 CWE-754

04 Nov 2021, 10:15

Type Values Removed Values Added
CWE CWE-754 CWE-252

28 Oct 2021, 18:04

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5
References (MISC) https://www.tenable.com/security/research/tra-2021-47 - (MISC) https://www.tenable.com/security/research/tra-2021-47 - Exploit, Third Party Advisory
References (CONFIRM) https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= - (CONFIRM) https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= - Vendor Advisory
CPE cpe:2.3:a:codesys:codesys:*:*:*:*:*:*:*:*

26 Oct 2021, 20:15

Type Values Removed Values Added
References
  • (MISC) https://www.tenable.com/security/research/tra-2021-47 -

26 Oct 2021, 11:40

Type Values Removed Values Added
New CVE
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