CVE-2023-27356: rax30 Command Injection — Fix

Description

NETGEAR RAX30 logCtrl Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR RAX30 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the logCtrl action. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-19825.

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CVSS v3.1 Score

8.0

HIGH

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

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
netgear	rax30_firmware	< 1.0.10.94
netgear	rax30	All
netgear	raxe300_firmware	< 1.0.10.94
netgear	raxe300	All

References

Advisories & Patches

https://kb.netgear.com/000065618/Security-Advisory-for-Post-authentication-Command-Injection-on-Some-Routers-PSV-2022-0350 https://kb.netgear.com/000065618/Security-Advisory-for-Post-authentication-Command-Injection-on-Some-Routers-PSV-2022-0350

Other References

https://www.zerodayinitiative.com/advisories/ZDI-23-503/ https://www.zerodayinitiative.com/advisories/ZDI-23-503/

Frequently Asked Questions

What is CVE-2023-27356? +

NETGEAR RAX30 logCtrl Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR RAX30 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the logCtrl action. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-19825. It has a CVSS v3.1 base score of 8.0 (HIGH).

How severe is CVE-2023-27356? +

CVE-2023-27356 has a CVSS v3.1 score of 8.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-27356? +

CVE-2023-27356 affects products from netgear, specifically: rax30, rax30_firmware, raxe300, raxe300_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-27356? +

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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