CVE-2017-6766
Cisco Firepower SSL Policy Bypass Vulnerability
Description
A vulnerability in the Secure Sockets Layer (SSL) Decryption and Inspection feature of Cisco Firepower System Software 5.4.0, 5.4.1, 6.0.0, 6.1.0, 6.2.0, 6.2.1, and 6.2.2 could allow an unauthenticated, remote attacker to bypass the SSL policy for decrypting and inspecting traffic on an affected system. The vulnerability is due to unexpected interaction with Known Key and Decrypt and Resign configuration settings of SSL policies when the affected software receives unexpected SSL packet headers. An attacker could exploit this vulnerability by sending a crafted SSL packet through an affected device in a valid SSL session. A successful exploit could allow the attacker to bypass the SSL decryption and inspection policy for the affected system, which could allow traffic to flow through the system without being inspected. Cisco Bug IDs: CSCve12652.
INFO
Published Date :
Aug. 7, 2017, 6:29 a.m.
Last Modified :
Oct. 9, 2019, 11:29 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2017-6766
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-2017-6766.
| URL | Resource |
|---|---|
| https://quickview.cloudapps.cisco.com/quickview/bug/CSCve12652 | Vendor Advisory |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-fpw | 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-2017-6766 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-6766 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 Cisco Systems, Inc. CWE-310 -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-310 NVD-CWE-noinfo -
Reanalysis by [email protected]
Nov. 15, 2017
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:firesight_system:5.4.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:5.4.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.2.2:*:*:*:*:*:*:* OR *cpe:2.3:a:cisco:firesight_system_software:5.4.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system_software:5.4.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system_software:6.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system_software:6.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system_software:6.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system_software:6.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system_software:6.2.2:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Aug. 15, 2017
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-fpw No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-fpw Vendor Advisory Changed Reference Type https://quickview.cloudapps.cisco.com/quickview/bug/CSCve12652 No Types Assigned https://quickview.cloudapps.cisco.com/quickview/bug/CSCve12652 Vendor Advisory Added CWE CWE-310 Added CPE Configuration OR *cpe:2.3:a:cisco:firesight_system:5.4.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:5.4.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firesight_system:6.2.2:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-6766 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-2017-6766
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.00%
score
0.47897
percentile