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CVE-2023-20071

MEDIUMCVSS 5.8/10EPSS 0.52%

Last modified

CVE-2023-20071 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.

Metrics

CVSS 3.1
5.8/10

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

EPSS Probability
0.52%

40.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Threat Defense< 6.4.0.17
CiscoFirepower Threat Defense>= 6.5.0, < 7.0.6
CiscoFirepower Threat Defense>= 7.1.0, < 7.2.4
CiscoFirepower Threat Defense>= 7.3.0, < 7.3.1.2
CiscoFirepower Threat Defense>= 6.7.0, < 7.0.5
CiscoFirepower Threat Defense>= 7.1.0, < 7.1.0.3
CiscoFirepower Threat Defense>= 7.2.0, < 7.2.1
CiscoCyber Vision< 4.1.3
CiscoUnified Threat Defense>= 17.3, < 17.3.8
CiscoUnified Threat Defense>= 17.6, < 17.6.6
CiscoUnified Threat Defense>= 17.9, < 17.9.4
CiscoUnified Threat Defense>= 17.11, < 17.11.1a
CiscoUnified Threat Defense>= 17.12, < 17.12.1a
CiscoMeraki Mx Security Appliance FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-20071?
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.
How severe is CVE-2023-20071?
CVE-2023-20071 has a CVSS score of 5.8/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2023-20071?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-20071?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST