CWE
331
Advisory Published
Updated

CVE-2024-38270

First published: Tue Sep 10 2024(Updated: )

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.

Credit: security@zyxel.com.tw

Affected SoftwareAffected VersionHow to fix
All of
Zyxel GS1900-48HPv2<2.80\(abtq.1\)c0
Zyxel GS1900-48HPv2 Firmware
All of
Zyxel GS1900-48 Firmware<2.80\(aahn.1\)c0
Zyxel GS1900-48HP Firmware
All of
Zyxel GS1900-24HPv2<2.80\(abtp.1\)c0
Zyxel GS1900-48HPv2
All of
Zyxel GS1900-24EP Firmware<2.80\(abto.1\)c0
Zyxel GS1900-24EP Firmware
All of
Zyxel GS1900-24E Firmware<=2.80\(aahk.1\)c0
Zyxel GS1900-24E Firmware
All of
ZyXEL GS1900-24 firmware<=2.80\(aahl.1\)c0
Zyxel GS1900-24E Firmware
All of
Zyxel GS1900-16<2.80\(aahj.1\)c0
Zyxel GS1900-16 Firmware
All of
Zyxel GS1900-10HP firmware<2.80\(aazi.1\)c0
Zyxel GS1900-10HP firmware
All of
Zyxel GS1900-8HP firmware<2.80\(aahi.1\)c0
Zyxel GS1900-8HP firmware
All of
Zyxel GS1900-8 firmware<2.80\(aahh.1\)c0
Zyxel GS1900-8

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Frequently Asked Questions

  • What is the severity of CVE-2024-38270?

    CVE-2024-38270 is considered a vulnerability with a slight risk of exploitation due to insufficient entropy in web authentication token generation.

  • How do I fix CVE-2024-38270?

    To mitigate CVE-2024-38270, update the firmware of the affected Zyxel GS1900 series switches to the latest version provided by Zyxel.

  • Which devices are affected by CVE-2024-38270?

    CVE-2024-38270 affects several Zyxel GS1900 series switches, including models GS1900-10HP, GS1900-24E, and GS1900-48HPV2 with specific firmware versions.

  • What type of attack can exploit CVE-2024-38270?

    CVE-2024-38270 can allow a LAN-based attacker to potentially gain unauthorized access to web authentication tokens.

  • Who is responsible for fixing CVE-2024-38270?

    The responsibility for fixing CVE-2024-38270 lies with Zyxel, which will provide patches through firmware updates as necessary.

Contact

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