Cisco Security Advisory
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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
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There are no workarounds that address these vulnerabilities.
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Fixes are available in the GitHub code repository tagged as BUILD_233.
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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.
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Cisco would like to thank Bhargava Shastry for reporting these vulnerabilities.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial public release. — Final 2017-May-15
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