7.5
HIGH
CVE-2018-20336
ASUSWRT UDP Stack-Based Buffer Overflow Vulnerability
Description

An issue was discovered in ASUSWRT 3.0.0.4.384.20308. There is a stack-based buffer overflow issue in parse_req_queries function in wanduck.c via a long string over UDP, which may lead to an information leak.

INFO

Published Date :

Sept. 17, 2019, 4:15 p.m.

Last Modified :

Sept. 19, 2019, 10:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2018-20336 has a 1 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-2018-20336 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 asuswrt-merlin
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-2018-20336.

URL Resource
https://starlabs.sg/advisories/18-20336/ Exploit Third Party Advisory
https://www.asus.com/Networking/RT-AC1200G-plus/HelpDesk_BIOS/

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).

Repo contains driver for Asus PCE-AC88 (Broadcom BCM4366), extracted from Asus AC88U

Updated: 3 years, 9 months ago
1 stars 1 fork 1 watcher
Born at : July 19, 2019, 4:49 p.m. This repo has been linked 2 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-2018-20336 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-20336 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 [email protected]

    May. 14, 2024

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

    Sep. 19, 2019

    Action Type Old Value New Value
    Added Reference https://www.asus.com/Networking/RT-AC1200G-plus/HelpDesk_BIOS/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Sep. 19, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://starlabs.sg/advisories/18-20336/ No Types Assigned https://starlabs.sg/advisories/18-20336/ Exploit, Third Party Advisory
    Added CWE CWE-120
    Added CPE Configuration AND OR *cpe:2.3:o:asus:asuswrt-merlin:3.0.0.4.384.20308:*:*:*:*:*:*:* OR cpe:2.3:h:asus:rt-ac68u:-:*:*:*:*:*:*:*
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-2018-20336 is associated with the following CWEs:

Exploit Prediction

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

0.38 }} 0.08%

score

0.69476

percentile

CVSS31 - Vulnerability Scoring System
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