OS Command Injection in Zyxel APs and security router devices

1) OS Command Injection

EUVDB-ID: #VU96715

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-7261

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper neutralization of special elements in the "host" parameter in the CGI program. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

NWA50AX: 7.00(ABYW.1)

NWA50AX PRO: 7.00(ACGE.1)

NWA55AXE: 7.00(ABZL.1)

NWA90AX: 7.00(ACCV.1)

NWA90AX PRO: 7.00(ACGF.1)

NWA110AX: 7.00(ABTG.1)

NWA130BE: 7.00(ACIL.1)

NWA210AX: 7.00(ABTD.1)

NWA220AX-6E: 7.00(ACCO.1)

NWA1123-AC PRO: 6.28(ABHD.0)

NWA1123ACv3: 6.70(ABVT.4)

WAC500: 6.70(ABVS.4)

WAC500H: 6.70(ABWA.4)

WAC6103D-I: 6.28(AAXH.0)

WAC6502D-S: 6.28(AASE.0)

WAC6503D-S: 6.28(AASF.0)

WAC6552D-S: 6.28(ABIO.0)

WAC6553D-E: 6.28(AASG.2)

WAX300H: 7.00(ACHF.1)

WAX510D: 7.00(ABTF.1)

WAX610D: 7.00(ABTE.1)

WAX620D-6E: 7.00(ACCN.1)

WAX630S: 7.00(ABZD.1)

WAX640S-6E: 7.00(ACCM.1)

WAX650S: 7.00(ABRM.1)

WAX655E: 7.00(ACDO.1)

WBE530: 7.00(ACLE.1)

WBE660S: 7.00(ACGG.1)

USG LITE 60AX: 2.00(ACIP.2)

External links

http://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-os-command-injection-vulnerability-in-aps-and-security-router-devices-09-03-2024

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.