CVE-2024-20508

Oct. 3, 2024, 2:43 p.m.

6.5
Medium

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.

Product(s) Impacted

Vendor Product Versions
Cisco
  • Unified Threat Defense Snort Intrusion Prevention System Engine
  • 17.6.1a, 17.6.2, 17.6.6, 17.7.1a, 17.7.2, 17.8.1a, 17.9.5a, 17.11.1a, 17.12.1a, 17.12.2, 17.12.3, 17.12.3a, 17.12.4, 17.13.1a, 17.14.1a, 17.15.1a

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-122
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.6.1a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.6.2 / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.6.6 / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.7.1a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.7.2 / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.8.1a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.9.5a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.11.1a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.12.1a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.12.2 / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.12.3 / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.12.3a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.12.4 / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.13.1a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.14.1a / / / / / / /
o cisco unified_threat_defense_snort_intrusion_prevention_system_engine 17.15.1a / / / / / / /

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-utd-snort3-dos-bypas-b4OUEwxD

Tags

ykramarz@cisco.com
CWE-787
CWE-122
2024-09-25
CVE-2024-20508

CVSS Score

6.5 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: LOW
  • Availability Impact: LOW

    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

    View Vector String

Timeline

Published: Sept. 25, 2024, 5:15 p.m.
Last Modified: Oct. 3, 2024, 2:43 p.m.

Status : Analyzed

CVE has had analysis completed and all data associations made.

More info

Source

ykramarz@cisco.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.