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ZyxelVULNRICHMENT:CVE-2024-38270

HistorySep 10, 2024 - 1:20 a.m.

CVE-2024-38270

2024-09-1001:20:09

CWE-331

Zyxel

github.com

entropy

zyxel

web authentication

lan-based attacker

session token

cve-2024-38270

CVSS3

5.3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7.5

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

An insufficient entropy vulnerability caused by the improper use of a randomness function with low entropy for web authentication tokens generation exists in the Zyxel GS1900-10HP firmware version V2.80(AAZI.0)C0. This vulnerability could allow a LAN-based attacker a slight chance to gain a valid session token if multiple authenticated sessions are alive.

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-insufficient-entropy-vulnerability-for-web-authentication-tokens-generation-in-gs1900-series-switches-09-10-2024

CVSS3

5.3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7.5

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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