Zyxel NWA1123ACv3/WAC500/WAX655E/WBE530/USG LITE 60AX Cookie host os command injection

Summaryinfo

A vulnerability was found in Zyxel NWA1123ACv3, WAC500, WAX655E, WBE530 and USG LITE 60AX. It has been classified as critical. Affected by this issue is some unknown functionality of the component Cookie Handler. The manipulation of the argument host leads to os command injection. This vulnerability is referenced as CVE-2024-7261. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Zyxel NWA1123ACv3, WAC500, WAX655E, WBE530 and USG LITE 60AX. This issue affects an unknown code block of the component Cookie Handler. The manipulation of the argument host with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The improper neutralization of special elements in the parameter "host" in the CGI program of Zyxel NWA1123ACv3 firmware version 6.70(ABVT.4) and earlier, WAC500 firmware version 6.70(ABVS.4) and earlier, WAX655E firmware version 7.00(ACDO.1) and earlier, WBE530 firmware version 7.00(ACLE.1) and earlier, and USG LITE 60AX firmware version V2.00(ACIP.2) could allow an unauthenticated attacker to execute OS commands by sending a crafted cookie to a vulnerable device.

The advisory is shared at zyxel.com. The identification of this vulnerability is CVE-2024-7261 since 07/30/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/03/2024). MITRE ATT&CK project uses the attack technique T1202 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Zyxel

Name

• NWA1123ACv3
• USG LITE 60AX
• WAC500
• WAX655E
• WBE530

License

• commercial

Website

• Vendor: https://www.zyxel.com/

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