PT-2023-12895 · Motorola · Motorola Mtm5000

Midnight Blue · Published 2023-10-19 · Updated 2023-10-27 · CVE-2022-26943

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Motorola MTM5000 series firmwares (affected versions not specified)

Description The Motorola MTM5000 series firmwares generate TETRA authentication challenges using a PRNG that relies on a tick count register as its sole entropy source. This results in low boottime entropy and limited re-seeding of the pool, making the authentication challenge vulnerable to attacks. An adversary can derive the contents of the entropy pool by an exhaustive search of possible values based on an observed authentication challenge. Additionally, an adversary can use knowledge of the entropy pool to predict authentication challenges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-338

Related Identifiers

CVE-2022-26943

Affected Products

Motorola Mtm5000

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2022-26943 · Security Note
• https://t.me/cibsecurity/72556 · Telegram Post
• https://t.me/cvenotify/59702 · Telegram Post
• https://twitter.com/CVEnew/status/1714942802872979798 · Twitter Post
• https://twitter.com/DMFezzaReedCISA/status/1714979247323000877 · Twitter Post
• https://tetraburst.com · Note