CVE-2022-26943 (GCVE-0-2022-26943)

Vulnerability from cvelistv5 – Published: 2023-10-19 09:34 – Updated: 2024-08-03 05:18
VLAI?
Title
Weak PRNG entropy source used for authentication challenge generation in Motorola MTM5000
Summary
The Motorola MTM5000 series firmwares generate TETRA authentication challenges using a PRNG using a tick count register as its sole entropy source. Low boottime entropy and limited re-seeding of the pool renders the authentication challenge vulnerable to two attacks. First, due to the limited boottime pool entropy, an adversary can derive the contents of the entropy pool by an exhaustive search of possible values, based on an observed authentication challenge. Second, an adversary can use knowledge of the entropy pool to predict authentication challenges. As such, the unit is vulnerable to CVE-2022-24400.
Severity ?
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C/CR:H/IR:H/AR:H/MAV:A/MAC:L/MPR:N/MUI:N/MS:U/MC:H/MI:H/MA:H
CWE
  • CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Assigner
References
Impacted products
Vendor Product Version
Motorola Mobile Radio Affected: MTM5000
Create a notification for this product.
Credits
Midnight Blue
Show details on NVD website
To clipboard 

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