CVE-2023-50921: gl-a1300 Privilege Escalation (CVSS 9.8)

Description

An issue was discovered on GL.iNet devices through 4.5.0. Attackers can invoke the add_user interface in the system module to gain root privileges. This affects A1300 4.4.6, AX1800 4.4.6, AXT1800 4.4.6, MT3000 4.4.6, MT2500 4.4.6, MT6000 4.5.0, MT1300 4.3.7, MT300N-V2 4.3.7, AR750S 4.3.7, AR750 4.3.7, AR300M 4.3.7, and B1300 4.3.7.

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CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-269 CWE-269

Affected Products

Vendor	Product	Versions
gl-inet	gl-mt1300_firmware	All
gl-inet	gl-mt1300	All
gl-inet	gl-mt300n-v2_firmware	All
gl-inet	gl-mt300n-v2	All
gl-inet	gl-ar750s_firmware	All
gl-inet	gl-ar750s	All
gl-inet	gl-ar750_firmware	All
gl-inet	gl-ar750	All
gl-inet	gl-ar300m_firmware	All
gl-inet	gl-ar300m	All
gl-inet	gl-b1300_firmware	All
gl-inet	gl-b1300	All
gl-inet	gl-mt6000_firmware	All
gl-inet	gl-mt6000	All
gl-inet	gl-a1300_firmware	All
gl-inet	gl-a1300	All
gl-inet	gl-ax1800_firmware	All
gl-inet	gl-ax1800	All
gl-inet	gl-axt1800_firmware	All
gl-inet	gl-axt1800	All
gl-inet	gl-mt3000_firmware	All
gl-inet	gl-mt3000	All
gl-inet	gl-mt2500_firmware	All
gl-inet	gl-mt2500	All

References

Other References

https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/Add_user_vulnerability.md https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/Add_user_vulnerability.md

Frequently Asked Questions

What is CVE-2023-50921? +

An issue was discovered on GL.iNet devices through 4.5.0. Attackers can invoke the add_user interface in the system module to gain root privileges. This affects A1300 4.4.6, AX1800 4.4.6, AXT1800 4.4.6, MT3000 4.4.6, MT2500 4.4.6, MT6000 4.5.0, MT1300 4.3.7, MT300N-V2 4.3.7, AR750S 4.3.7, AR750 4.3.7, AR300M 4.3.7, and B1300 4.3.7. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2023-50921? +

CVE-2023-50921 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2023-50921? +

CVE-2023-50921 affects products from gl-inet, specifically: gl-a1300, gl-a1300_firmware, gl-ar300m, gl-ar300m_firmware, gl-ar750, gl-ar750_firmware, gl-ar750s, gl-ar750s_firmware, gl-ax1800, gl-ax1800_firmware, gl-axt1800, gl-axt1800_firmware, gl-b1300, gl-b1300_firmware, gl-mt1300, gl-mt1300_firmware, gl-mt2500, gl-mt2500_firmware, gl-mt3000, gl-mt3000_firmware, gl-mt300n-v2, gl-mt300n-v2_firmware, gl-mt6000, gl-mt6000_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-50921? +

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-2023-50921