CVE-2021-34585

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-34585
  • Assigner
  • info@cert.vde.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-10-26T10:15:07
  • Last Modified Date
  • 2021-11-23T20:32:22
Weakness Enumerations
CWE URL
CWE-252 http://cwe.mitre.org/data/definitions/252.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:codesys:codesys:*:*:*:*:*:*:*:* 1 OR 1.1.9.22
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-34585
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34585
History
Created Old Value New Value Data Type Notes
2022-05-10 06:45:11 Added to TrackCVE
2022-12-05 13:15:57 2021-10-26T10:15Z 2021-10-26T10:15:07 CVE Published Date updated
2022-12-05 13:15:57 2021-11-23T20:32:22 CVE Modified Date updated
2022-12-05 13:15:57 Analyzed Vulnerability Status updated