CVE-2017-7901
Rockwell Automation Allen-Bradley Predictable TCP Sequence Number Vulnerability
Description
A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device.
INFO
Published Date :
June 30, 2017, 3:29 a.m.
Last Modified :
July 8, 2017, 1:29 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.7
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2017-7901
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.
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-2017-7901.
| URL | Resource |
|---|---|
| http://www.securitytracker.com/id/1038546 | |
| https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04 | Patch Third Party Advisory US Government Resource |
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-2017-7901 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-7901 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]
Oct. 09, 2019
Action Type Old Value New Value Added CWE ICS-CERT CWE-343 -
CVE Modified by [email protected]
Jul. 08, 2017
Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1038546 [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 07, 2017
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:C) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H Changed Reference Type https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04 No Types Assigned https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04 Patch, Third Party Advisory, US Government Resource Added CWE CWE-330 Added CPE Configuration AND OR *cpe:2.3:a:rockwellautomation:1763-l16awa_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1763-l16awa_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1763-l16bbb_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1763-l16bbb_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1763-l16bwa_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1763-l16bwa_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1763-l16dwd_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1763-l16dwd_series_b:16.000:*:*:*:*:*:*:* (and previous) OR cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1100:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:rockwellautomation:1766-l32awa_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32awa_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32awaa_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32awaa_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bwa_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bwa_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bxb_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bxb_series_b:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bxba_series_a:16.000:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:rockwellautomation:1766-l32bxba_series_b:16.000:*:*:*:*:*:*:* (and previous) OR cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1400:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-7901 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-2017-7901
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} -0.00%
score
0.12477
percentile