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CERTVDECVELIST:CVE-2021-34600

HistoryJan 20, 2022 - 11:40 a.m.

CVE-2021-34600 Telenot complex: Insecure AES Key Generation

2022-01-2011:40:11

CWE-335

CERTVDE

www.cve.org

cve-2021-34600

telenot compasx

weak seed

random number generation

predictable aes keys

nfc tags

local authorization

trustworthiness

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.6

Confidence

High

EPSS

0.001

Percentile

17.8%

JSON

Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "CompasX",
    "vendor": "Telenot Electronic GmbH",
    "versions": [
      {
        "lessThan": "32.0",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

www.x41-dsec.de/lab/advisories/x41-2021-003-telenot-complex-insecure-keygen/

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.6

Confidence

High

EPSS

0.001

Percentile

17.8%

JSON

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