Two vulnerabilities in the protocol decoders of Snort++ (Snort 3) could allow an unauthenticated, remote attacker to create a Denial of Service (DoS) condition. The vulnerabilities are due to lack of validation in the protocol decoders. An attacker could exploit these vulnerabilities by crafting a malicious packet and sending it through the targeted device. A successful exploit could allow the attacker to cause a DoS condition if the Snort process restarts and traffic inspection is bypassed or traffic is dropped. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170515-snort
Cisco TALOS released a blog post on May 12, 2017 titled Snort++ Vulnerabilities Found. The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public malicious use of the vulnerabilities described in this advisory.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.0 | Initial public release. | - | Final | 2017-May-15 |
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