CVE-2023-35086: ASUS RT-AX56U V2 & RT-AC86U - Format String -1
First published: Fri Jul 21 2023(Updated: )
It is identified a format string vulnerability in ASUS RT-AX56U V2 & RT-AC86U. This vulnerability is caused by directly using input as a format string when calling syslog in logmessage_normal function, in the do_detwan_cgi module of httpd. A remote attacker with administrator privilege can exploit this vulnerability to perform remote arbitrary code execution, arbitrary system operation or disrupt service. This issue affects RT-AX56U V2: 3.0.0.4.386_50460; RT-AC86U: 3.0.0.4_386_51529.
Credit: twcert@cert.org.tw twcert@cert.org.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Asus Rt-ac86u Firmware | =3.0.0.4_386_51529 | |
| ASUS RT-AC86U | ||
| Asus Rt-ax56u V2 Firmware | =3.0.0.4.386_50460 | |
| ASUS RT-AX56U V2 | ||
| All of | ||
| Asus Rt-ac86u Firmware | =3.0.0.4_386_51529 | |
| ASUS RT-AC86U | ||
| All of | ||
| Asus Rt-ax56u V2 Firmware | =3.0.0.4.386_50460 | |
| ASUS RT-AX56U V2 |
Remedy
RT-AX56U V2: update firmware version to 3.0.0.4_386_51598 RT-AC86U: update firmware version 3.0.0.4.386_51915
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this format string vulnerability in ASUS RT-AX56U V2 & RT-AC86U?
The vulnerability ID for this format string vulnerability in ASUS RT-AX56U V2 & RT-AC86U is CVE-2023-35086.
What is the severity of CVE-2023-35086?
The severity of CVE-2023-35086 is critical with a severity value of 9.
Which software versions are affected by CVE-2023-35086?
The firmware versions 3.0.0.4_386_51529 for ASUS RT-AC86U and 3.0.0.4.386_50460 for ASUS RT-AX56U V2 are affected by CVE-2023-35086.
How does CVE-2023-35086 vulnerability occur?
CVE-2023-35086 vulnerability occurs due to the direct use of user input as a format string in the logmessage_normal function of the do_detwan_cgi module.
How can an attacker exploit CVE-2023-35086?
An unauthenticated remote attacker without privilege can exploit CVE-2023-35086 by exploiting the format string vulnerability to execute arbitrary code.
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