Vulnerability Details CVE-2023-20270
A vulnerability in the interaction between the Server Message Block (SMB) protocol preprocessor and the Snort 3 detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error-checking when the Snort 3 detection engine is processing SMB traffic. An attacker could exploit this vulnerability by sending a crafted SMB packet stream through an affected device. A successful exploit could allow the attacker to cause the Snort process to reload, resulting in a DoS condition.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 4.4%
CVSS Severity
CVSS v3 Score 5.8
References
Products affected by CVE-2023-20270
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cpe:2.3:a:cisco:firepower_threat_defense:7.1.0
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cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1
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cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2
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cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.3
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cpe:2.3:a:cisco:firepower_threat_defense:7.2.0
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cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1
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cpe:2.3:a:cisco:firepower_threat_defense:7.2.1
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cpe:2.3:a:cisco:firepower_threat_defense:7.2.2
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cpe:2.3:a:cisco:firepower_threat_defense:7.2.3
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cpe:2.3:a:cisco:firepower_threat_defense:7.3.0
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cpe:2.3:a:cisco:firepower_threat_defense:7.3.1
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cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.1