7.5
HIGH
CVE-2020-11637
B&R Automation Runtime TFTP Service Memory Leak Denial of Service
Description

A memory leak in the TFTP service in B&R Automation Runtime versions <N4.26, <N4.34, <F4.45, <E4.53, <D4.63, <A4.73 and prior could allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition.

INFO

Published Date :

Oct. 15, 2020, 4:15 p.m.

Last Modified :

Sept. 14, 2021, 5:36 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2020-11637 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 Br-automation automation_runtime
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-2020-11637.

URL Resource
https://www.br-automation.com/downloads_br_productcatalogue/assets/1595163815396-de-original-1.0.pdf Vendor 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).

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

The following list is the news that have been mention CVE-2020-11637 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-11637 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
  • Reanalysis by [email protected]

    Sep. 14, 2021

    Action Type Old Value New Value
    Removed CWE NIST CWE-772
    Added CWE NIST CWE-401
  • Initial Analysis by [email protected]

    Oct. 26, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://www.br-automation.com/downloads_br_productcatalogue/assets/1595163815396-de-original-1.0.pdf No Types Assigned https://www.br-automation.com/downloads_br_productcatalogue/assets/1595163815396-de-original-1.0.pdf Vendor Advisory
    Added CWE NIST CWE-772
    Added CPE Configuration OR *cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* versions up to (including) 4.10 *cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) n4.26 *cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* versions from (including) 4.40 up to (excluding) f4.45 *cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* versions from (including) 4.50 up to (excluding) e4.53 *cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* versions from (including) 4.60 up to (excluding) d4.63 *cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* versions from (including) 4.70 up to (excluding) a4.73
    Added CPE Configuration OR *cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* versions from (including) 4.30 up to (excluding) n4.34
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-2020-11637 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-2020-11637 weaknesses.

Exploit Prediction

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

0.11 }} 0.01%

score

0.43158

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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Scope
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