7.2
HIGH
CVE-2023-35086
ASUS Router Format String Vulnerability (Remote Code Execution)
Description

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.

INFO

Published Date :

July 21, 2023, 7:15 a.m.

Last Modified :

Nov. 21, 2024, 8:07 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

1.2
Public PoC/Exploit Available at Github

CVE-2023-35086 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-35086 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Asus rt-ac86u_firmware
2 Asus rt-ax56u_v2_firmware
3 Asus rt-ax56u_v2
4 Asus rt-ac86u
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-35086.

URL Resource
https://www.twcert.org.tw/tw/cp-132-7240-a5f96-1.html Third Party Advisory
https://www.twcert.org.tw/tw/cp-132-7240-a5f96-1.html Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

POC of CVE-2023-35086 only DoS

Python

Updated: 4 months, 2 weeks ago
44 stars 7 fork 7 watcher
Born at : July 25, 2023, 1:36 a.m. This repo has been linked 1 different CVEs too.

None

Updated: 5 months, 2 weeks ago
2 stars 0 fork 0 watcher
Born at : March 16, 2023, 3:08 p.m. This repo has been linked 5 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-35086 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-35086 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://www.twcert.org.tw/tw/cp-132-7240-a5f96-1.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Mar. 27, 2024

    Action Type Old Value New Value
    Changed Description 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. An unauthenticated remote attacker without 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. 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.
    Removed CVSS V3.1 TWCERT/CC AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 TWCERT/CC AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Aug. 04, 2023

    Action Type Old Value New Value
    Changed Reference Type https://www.twcert.org.tw/tw/cp-132-7240-a5f96-1.html No Types Assigned https://www.twcert.org.tw/tw/cp-132-7240-a5f96-1.html Third Party Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:asus:rt-ac86u_firmware:3.0.0.4_386_51529:*:*:*:*:*:*:* OR cpe:2.3:h:asus:rt-ac86u:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:asus:rt-ax56u_v2_firmware:3.0.0.4.386_50460:*:*:*:*:*:*:* OR cpe:2.3:h:asus:rt-ax56u_v2:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-35086 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-35086 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} -0.22%

score

0.29928

percentile

CVSS31 - Vulnerability Scoring System
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