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IcscertCVELIST:CVE-2023-36610

HistoryJul 03, 2023 - 8:01 p.m.

CVE-2023-36610

2023-07-0320:01:31

CWE-331

icscert

www.cve.org

tbox rtus

insufficient entropy

brute force attacks

software tokens

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.9

Confidence

High

EPSS

0.001

Percentile

43.4%

JSON

The affected TBox RTUs generate software security tokens using insufficient entropy. The random seed used to generate the software tokens is not initialized correctly, and other parts of the token are generated using predictable time-based values. An attacker with this knowledge could successfully brute force the token and authenticate themselves.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "TBox MS-CPU32",
    "vendor": "Ovarro",
    "versions": [
      {
        "lessThanOrEqual": "1.50.598",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "TBox MS-CPU32-S2",
    "vendor": "Ovarro",
    "versions": [
      {
        "lessThanOrEqual": "1.50.598",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "TBox LT2",
    "vendor": "Ovarro",
    "versions": [
      {
        "lessThanOrEqual": "1.50.598",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "TBox TG2",
    "vendor": "Ovarro",
    "versions": [
      {
        "lessThanOrEqual": "1.50.598",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "TBox RM2",
    "vendor": "Ovarro",
    "versions": [
      {
        "lessThanOrEqual": "1.50.598",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

References

www.cisa.gov/news-events/ics-advisories/icsa-23-180-03

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.9

Confidence

High

EPSS

0.001

Percentile

43.4%

JSON

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