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CERTVDECVELIST:CVE-2021-34586

HistoryOct 26, 2021 - 9:55 a.m.

CVE-2021-34586 CODESYS V2 web server: crafted requests could trigger a null pointer dereference (DoS)

2021-10-2609:55:49

CWE-476

CERTVDE

www.cve.org

codesys v2

web server

null pointer

denial-of-service

crafted requests

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

48.7%

JSON

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition.

CNA Affected

[
  {
    "product": "CODESYS V2",
    "vendor": "CODESYS",
    "versions": [
      {
        "lessThan": "V1.1.9.22",
        "status": "affected",
        "version": "all web servers",
        "versionType": "custom"
      }
    ]
  }
]

References

customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download=

www.tenable.com/security/research/tra-2021-47

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

48.7%

JSON

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