CVE-2023-20031
First published: Wed Nov 01 2023(Updated: )
A vulnerability in the SSL/TLS certificate handling of Snort 3 Detection Engine integration with Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to restart. This vulnerability is due to a logic error that occurs when an SSL/TLS certificate that is under load is accessed when it is initiating an SSL connection. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a high rate of SSL/TLS connection requests to be inspected by the Snort 3 detection engine on an affected device. A successful exploit could allow the attacker to cause the Snort 3 detection engine to reload, resulting in either a bypass or a denial of service (DoS) condition, depending on device configuration. The Snort detection engine will restart automatically. No manual intervention is required.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Threat Defense | =6.7.0 | |
| Cisco Firepower Threat Defense | =6.7.0.1 | |
| Cisco Firepower Threat Defense | =6.7.0.2 | |
| Cisco Firepower Threat Defense | =6.7.0.3 | |
| Cisco Firepower Threat Defense | =7.0.0 | |
| Cisco Firepower Threat Defense | =7.0.0.1 | |
| Cisco Firepower Threat Defense | =7.0.1 | |
| Cisco Firepower Threat Defense | =7.0.1.1 | |
| Cisco Firepower Threat Defense | =7.0.2 | |
| Cisco Firepower Threat Defense | =7.0.2.1 | |
| Cisco Firepower Threat Defense | =7.0.3 | |
| Cisco Firepower Threat Defense | =7.0.4 | |
| Cisco Firepower Threat Defense | =7.0.5 | |
| Cisco Firepower Threat Defense | =7.2.0 | |
| Cisco Firepower Threat Defense | =7.2.0.1 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2023-20031.
What is the severity of CVE-2023-20031?
The severity of CVE-2023-20031 is medium with a severity value of 5.4.
Which software versions are affected by CVE-2023-20031?
Versions 6.7.0 to 7.2.0.1 of Cisco Firepower Threat Defense are affected by CVE-2023-20031.
How does the vulnerability in SSL/TLS certificate handling of Snort 3 Detection Engine integration with Cisco Firepower Threat Defense (FTD) Software occur?
The vulnerability is due to a logic error that occurs in the SSL/TLS certificate handling, which allows an unauthenticated, remote attacker to cause the Snort 3 detection engine to restart.
Is there a fix available for CVE-2023-20031?
Yes, it is recommended to upgrade to a fixed software version as mentioned in the Cisco Security Advisory.
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- agent/weakness
- agent/description
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- agent/tags
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- vendor/cisco
- canonical/cisco firepower threat defense
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- version/cisco firepower threat defense/6.7.0.3
- version/cisco firepower threat defense/7.0.0
- version/cisco firepower threat defense/7.0.0.1
- version/cisco firepower threat defense/7.0.1
- version/cisco firepower threat defense/7.0.1.1
- version/cisco firepower threat defense/7.0.2
- version/cisco firepower threat defense/7.0.2.1
- version/cisco firepower threat defense/7.0.3
- version/cisco firepower threat defense/7.0.4
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- version/cisco firepower threat defense/7.2.0
- version/cisco firepower threat defense/7.2.0.1