5.8
Medium
CVE-2021-1224 Multiple Cisco products are affected by a vulnerability with TCP Fast Open (TFO) when used in conjunction with the Snort…
Description
Multiple Cisco products are affected by a vulnerability with TCP Fast Open (TFO) when used in conjunction with the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect detection of the HTTP payload if it is contained at least partially within the TFO connection handshake. An attacker could exploit this vulnerability by sending crafted TFO packets with an HTTP payload through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Firepower Threat Defense Software | Versions not published |
References
- 20210113 Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability tools.cisco.com
- [debian-lts-announce] 20230210 [SECURITY] [DLA 3317-1] snort security update lists.debian.org
- DSA-5354 www.debian.org
Timeline
- Published
- Last modified
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