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CVE-2023-39239— ASUS RT-AX55、RT-AX56U_V2、RT-AC86U - Format String - 2

Quick assessment

Affected
ASUS RT-AX55
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ASUS RT-AX56U是中国华硕（ASUS）公司的一款无线路由器。 ASUS RT-AX56U V2版本存在格式化字符串错误漏洞，该漏洞源于缺少对apply.cgi模块中的特定值进行验证，存在格式字符串漏洞，未经身份验证的远程攻击者可以在没有权限的情况下利用此漏洞执行远程任意代码。

CVSS 7.2 · High EPSS 1.28% · P69
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I. Basic Information for CVE-2023-39239

Vulnerability Information
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Vulnerability Title
ASUS RT-AX55、RT-AX56U_V2、RT-AC86U - Format String - 2
Source: CVE Program / CVE List V5
Vulnerability Description
It is identified a format string vulnerability in ASUS RT-AX56U V2’s General function API. This vulnerability is caused by lacking validation for a specific value within its apply.cgi module. A remote attacker with administrator privilege can exploit this vulnerability to perform remote arbitrary code execution, arbitrary system operation or disrupt service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部控制的格式字符串
Source: CVE Program / CVE List V5
Vulnerability Title
ASUS RT-AX56U 格式化字符串错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ASUS RT-AX56U是中国华硕（ASUS）公司的一款无线路由器。 ASUS RT-AX56U V2版本存在格式化字符串错误漏洞，该漏洞源于缺少对apply.cgi模块中的特定值进行验证，存在格式字符串漏洞，未经身份验证的远程攻击者可以在没有权限的情况下利用此漏洞执行远程任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ASUS RT-AX55 3.0.0.4.386_50460 -
ASUS RT-AX56U_V2 3.0.0.4.386_50460 -
ASUS RT-AC86U 3.0.0.4_386_51529 -

II. Public POCs for CVE-2023-39239

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III. Intelligence Information for CVE-2023-39239

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Other References for CVE-2023-39239 (1)

Same Patch Batch · ASUS · 2023-09-07 · 8 CVEs total

CVE-2023-39237 8.8 HIGH ASUS RT-AC86U - Command injection vulnerability - 5
CVE-2023-39236 8.8 HIGH ASUS RT-AC86U - Command injection vulnerability - 4
CVE-2023-38033 8.8 HIGH ASUS RT-AC86U - Command injection vulnerability - 3
CVE-2023-38032 8.8 HIGH ASUS RT-AC86U - Command injection vulnerability - 2
CVE-2023-38031 8.8 HIGH ASUS RT-AC86U - Command injection vulnerability - 1
CVE-2023-39240 7.2 HIGH ASUS RT-AX55、RT-AX56U_V2 - Format String - 3
CVE-2023-39238 7.2 HIGH ASUS RT-AX55、RT-AX56U_V2 - Format String - 1

IV. Related Vulnerabilities

Same product: RT-AX55
Same vendor: ASUS
Same weakness: CWE-134

V. Comments for CVE-2023-39239

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