6.5
MEDIUM
CVE-2024-38270
Zyxel GS1900-10HP Insufficient Entropy Web Authentication Token Vulnerability
Description

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.

INFO

Published Date :

Sept. 10, 2024, 2:15 a.m.

Last Modified :

Sept. 18, 2024, 6:23 p.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2024-38270 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Zyxel gs1900-8_firmware
2 Zyxel gs1900-24_firmware
3 Zyxel gs1900-8hp_firmware
4 Zyxel gs1900-10hp_firmware
5 Zyxel gs1900-16_firmware
6 Zyxel gs1900-24e_firmware
7 Zyxel gs1900-48_firmware
8 Zyxel gs1900-24ep_firmware
9 Zyxel gs1900-24hpv2_firmware
10 Zyxel gs1900-48hpv2_firmware
11 Zyxel gs1900-48hpv2
12 Zyxel gs1900-48
13 Zyxel gs1900-24hpv2
14 Zyxel gs1900-24ep
15 Zyxel gs1900-24e
16 Zyxel gs1900-24
17 Zyxel gs1900-16
18 Zyxel gs1900-10hp
19 Zyxel gs1900-8hp
20 Zyxel gs1900-8
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-38270.

URL Resource
https://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 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-38270 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-38270 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Sep. 18, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://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 No Types Assigned https://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 Vendor Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-48hpv2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(abtq.1\)c0 OR cpe:2.3:h:zyxel:gs1900-48hpv2:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-48_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(aahn.1\)c0 OR cpe:2.3:h:zyxel:gs1900-48:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-24hpv2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(abtp.1\)c0 OR cpe:2.3:h:zyxel:gs1900-24hpv2:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-24ep_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(abto.1\)c0 OR cpe:2.3:h:zyxel:gs1900-24ep:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-24e_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.80\(aahk.1\)c0 OR cpe:2.3:h:zyxel:gs1900-24e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-24_firmware:*:*:*:*:*:*:*:* versions up to (including) 2.80\(aahl.1\)c0 OR cpe:2.3:h:zyxel:gs1900-24:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-16_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(aahj.1\)c0 OR cpe:2.3:h:zyxel:gs1900-16:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-10hp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(aazi.1\)c0 OR cpe:2.3:h:zyxel:gs1900-10hp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-8hp_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(aahi.1\)c0 OR cpe:2.3:h:zyxel:gs1900-8hp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gs1900-8_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.80\(aahh.1\)c0 OR cpe:2.3:h:zyxel:gs1900-8:-:*:*:*:*:*:*:*
  • CVE Received by [email protected]

    Sep. 10, 2024

    Action Type Old Value New Value
    Added Description 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.
    Added Reference Zyxel Corporation https://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 [No types assigned]
    Added CWE Zyxel Corporation CWE-331
    Added CVSS V3.1 Zyxel Corporation AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-38270 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-38270 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability