Denial of service in Cisco Firepower Threat Defense (FTD)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-20177 |
| CWE-ID | CWE-840 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco Firepower Threat Defense (FTD) Hardware solutions / Security hardware applicances |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Business Logic Errors
EUVDB-ID: #VU82664
Risk: Low
CVSSv3.1: 3.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-20177
CWE-ID:
CWE-840 - Business Logic Errors (3.0)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the a logic error when SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine. A remote attacker can trigger an unexpected reload of the Snort 3 detection engine and perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsCisco Firepower Threat Defense (FTD): 7.0.0 - 7.3.0
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
