CVE-2024-8882: gs1900-8 Buffer Overflow — Fix

Description

A buffer overflow vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator privileges to cause denial of service (DoS) conditions via a crafted URL.

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CVSS v3.1 Score

4.5

MEDIUM

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

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
zyxel	gs1900-8_firmware	< 2.90\(aahh.0\)c0
zyxel	gs1900-8	All
zyxel	gs1900-8hp_firmware	< 2.90\(aahi.0\)c0
zyxel	gs1900-8hp	All
zyxel	gs1900-10hp_firmware	< 2.90\(aazi.0\)c0
zyxel	gs1900-10hp	All
zyxel	gs1900-16_firmware	< 2.90\(aahj.0\)c0
zyxel	gs1900-16	All
zyxel	gs1900-24_firmware	< 2.90\(aahl.0\)c0
zyxel	gs1900-24	All
zyxel	gs1900-24e_firmware	< 2.90\(aahk.0\)c0
zyxel	gs1900-24e	All
zyxel	gs1900-24ep_firmware	< 2.90\(abto.0\)c0
zyxel	gs1900-24ep	All
zyxel	gs1900-24hpv2_firmware	< 2.90\(abtp.0\)c0
zyxel	gs1900-24hpv2	All
zyxel	gs1900-48_firmware	< 2.90\(aahn.0\)c0
zyxel	gs1900-48	All
zyxel	gs1900-48hpv2_firmware	< 2.90\(abtq.0\)c0
zyxel	gs1900-48hpv2	All

References

Advisories & Patches

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-and-buffer-overflow-vulnerabilities-in-gs1900-series-switches-11-12-2024

Frequently Asked Questions

What is CVE-2024-8882? +

A buffer overflow vulnerability in the CGI program in the Zyxel GS1900-48 switch firmware version V2.80(AAHN.1)C0 and earlier could allow an authenticated, LAN-based attacker with administrator privileges to cause denial of service (DoS) conditions via a crafted URL. It has a CVSS v3.1 base score of 4.5 (MEDIUM).

How severe is CVE-2024-8882? +

CVE-2024-8882 has a CVSS v3.1 score of 4.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-8882? +

CVE-2024-8882 affects products from zyxel, specifically: gs1900-10hp, gs1900-10hp_firmware, gs1900-16, gs1900-16_firmware, gs1900-24, gs1900-24_firmware, gs1900-24e, gs1900-24e_firmware, gs1900-24ep, gs1900-24ep_firmware, gs1900-24hpv2, gs1900-24hpv2_firmware, gs1900-48, gs1900-48_firmware, gs1900-48hpv2, gs1900-48hpv2_firmware, gs1900-8, gs1900-8_firmware, gs1900-8hp, gs1900-8hp_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-8882? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-8882