CVE-2023-20215
Cisco Secure Web Appliance Malicious Traffic Encoding Detection Vulnerability
Description
A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule, allowing traffic onto a network that should have been blocked. This vulnerability is due to improper detection of malicious traffic when the traffic is encoded with a specific content format. An attacker could exploit this vulnerability by using an affected device to connect to a malicious server and receiving crafted HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.
INFO
Published Date :
Aug. 3, 2023, 10:15 p.m.
Last Modified :
Jan. 25, 2024, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
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-2023-20215.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-vXvqwzsj | 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-2023-20215 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-20215 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]
Jan. 25, 2024
Action Type Old Value New Value Added CWE Cisco Systems, Inc. CWE-202 -
Initial Analysis by [email protected]
Aug. 11, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-vXvqwzsj No Types Assigned https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-bypass-vXvqwzsj Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:cisco:asyncos:11.7.0-406:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.7.0-418:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.7.1-006:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.7.1-020:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.7.1-049:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.7.2-011:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.8.0-414:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.8.1-023:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.8.3-018:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:11.8.3-021:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:12.0.1-268:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:12.0.3-007:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:12.5.1-011:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:12.5.2-007:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:12.5.4-005:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:12.5.5-004:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:14.0.2-012:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:14.0.3-014:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:14.0.4-005:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:14.5.0-498:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:14.5.1-008:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:14.5.1-016:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:s195:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:s395:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:s695:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:web_security_appliance_s170:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:web_security_appliance_s190:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:web_security_appliance_s380:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:web_security_appliance_s390:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:web_security_appliance_s680:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:web_security_appliance_s690:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:web_security_appliance_s690x:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-20215 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-2023-20215
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.02%
score
0.35170
percentile