CVE-2021-1494 Security feature bypass in Cisco Firepower Threat Defense Software
Unauthenticated remote attackers can bypass HTTP file policies in Cisco Snort engines to deliver malicious payloads.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-1494?
CVE-2021-1494 is a medium-severity vulnerability in Cisco Firepower Threat Defense Software, published on 15 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Multiple Cisco products are affected by a vulnerability in 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 handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.
Weakness: CWE-693
Which versions are affected by CVE-2021-1494?
How do I fix CVE-2021-1494?
Apply the vendor's patch.
Is CVE-2021-1494 being exploited?
There is no known exploitation of CVE-2021-1494 in the wild and no public exploit code.
Sources
Also known as GHSA-wh72-9gx8-gwhv, UBUNTU-CVE-2021-1494.