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CVE-2023-39238— ASUS RT-AX55、RT-AX56U_V2 - Format String - 1

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 存在格式化字符串错误漏洞，该漏洞源于缺乏对其 set_iperf3_svr.cgi 模块中特定值的验证，导致格式字符串漏洞。

CVSS 7.2 · High EPSS 1.36% · P71

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-39238

Vulnerability Information
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Vulnerability Title
ASUS RT-AX55、RT-AX56U_V2 - Format String - 1
Source: CVE Program / CVE List V5
Vulnerability Description
It is identified a format string vulnerability in ASUS RT-AX56U V2. This vulnerability is caused by lacking validation for a specific value within its set_iperf3_svr.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 存在格式化字符串错误漏洞，该漏洞源于缺乏对其 set_iperf3_svr.cgi 模块中特定值的验证，导致格式字符串漏洞。
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 -

II. Public POCs for CVE-2023-39238

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III. Intelligence Information for CVE-2023-39238

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Other References for CVE-2023-39238 (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-2023-39239 7.2 HIGH ASUS RT-AX55、RT-AX56U_V2、RT-AC86U - Format String - 2

IV. Related Vulnerabilities

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

V. Comments for CVE-2023-39238

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