CVE-2024-20508
Cisco Unified Threat Defense (UTD) Snort IPS Engine HTTP Request Validation Vulnerability
Description
A vulnerability in Cisco Unified Threat Defense (UTD) Snort Intrusion Prevention System (IPS) Engine for Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass configured security policies or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of HTTP requests when they are processed by Cisco UTD Snort IPS Engine. An attacker could exploit this vulnerability by sending a crafted HTTP request through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process. If the action in case of Cisco UTD Snort IPS Engine failure is set to the default, fail-open, successful exploitation of this vulnerability could allow the attacker to bypass configured security policies. If the action in case of Cisco UTD Snort IPS Engine failure is set to fail-close, successful exploitation of this vulnerability could cause traffic that is configured to be inspected by Cisco UTD Snort IPS Engine to be dropped.
INFO
Published Date :
Sept. 25, 2024, 5:15 p.m.
Last Modified :
Oct. 3, 2024, 2:43 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.5
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2024-20508
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-2024-20508.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-utd-snort3-dos-bypas-b4OUEwxD | 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-2024-20508 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-20508 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.
-
Initial Analysis by [email protected]
Oct. 03, 2024
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:L Changed Reference Type https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-utd-snort3-dos-bypas-b4OUEwxD No Types Assigned https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-utd-snort3-dos-bypas-b4OUEwxD Vendor Advisory Added CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.6.6:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.7.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.8.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.11.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.13.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.14.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.1a:*:*:*:*:*:*:* -
CVE Received by [email protected]
Sep. 25, 2024
Action Type Old Value New Value Added Description A vulnerability in Cisco Unified Threat Defense (UTD) Snort Intrusion Prevention System (IPS) Engine for Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass configured security policies or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of HTTP requests when they are processed by Cisco UTD Snort IPS Engine. An attacker could exploit this vulnerability by sending a crafted HTTP request through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process. If the action in case of Cisco UTD Snort IPS Engine failure is set to the default, fail-open, successful exploitation of this vulnerability could allow the attacker to bypass configured security policies. If the action in case of Cisco UTD Snort IPS Engine failure is set to fail-close, successful exploitation of this vulnerability could cause traffic that is configured to be inspected by Cisco UTD Snort IPS Engine to be dropped. Added Reference Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-utd-snort3-dos-bypas-b4OUEwxD [No types assigned] Added CWE Cisco Systems, Inc. CWE-122 Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-20508 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-2024-20508
weaknesses.