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CERTVDECVE-2021-34596

HistoryOct 26, 2021 - 10:15 a.m.

CVE-2021-34596

2021-10-2610:15:08

CWE-824

CERTVDE

web.nvd.nist.gov

cve-2021-34596

codesys

v2 runtime toolkit

denial of service

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.2

Confidence

High

EPSS

0.001

Percentile

35.0%

JSON

A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.

Affected configurations

Nvd

Node

codesysplcwinntRange<2.4.7.56

codesysruntime_toolkitRange<2.4.7.56x86

VendorProductVersionCPE
codesysplcwinnt*cpe:2.3:a:codesys:plcwinnt:*:*:*:*:*:*:*:*
codesysruntime_toolkit*cpe:2.3:a:codesys:runtime_toolkit:*:*:*:*:*:*:x86:*

Vendor	Product	Version	CPE
codesys	plcwinnt	*	cpe:2.3:a:codesys:plcwinnt::::::::
codesys	runtime_toolkit	*	cpe:2.3:a:codesys:runtime_toolkit:::::::x86:*

CNA Affected

[
  {
    "product": "CODESYS V2",
    "vendor": "CODESYS",
    "versions": [
      {
        "lessThan": "V2.4.7.56",
        "status": "affected",
        "version": "Runtime Toolkit 32 bit full",
        "versionType": "custom"
      },
      {
        "lessThan": "V2.4.7.56",
        "status": "affected",
        "version": "PLCWinNT",
        "versionType": "custom"
      }
    ]
  }
]

References

customers.codesys.com/index.php?eID=dumpFile&t=f&f=16878&token=e5644ec405590e66aefa62304cb8632df9fc9e9c&download=

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.2

Confidence

High

EPSS

0.001

Percentile

35.0%

JSON

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