CVE-2020-3315: Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured file policies on an affected system. The vulnerability is due to errors in how the Snort detection engine handles specific HTTP responses. An attacker could exploit this vulnerability by sending crafted HTTP packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured file policies and deliver a malicious payload to the protected network.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/snortto a version that resolves this vulnerability.Fixed in 2.9.20-0+deb10u1Fixed in 2.9.20-0+deb11u1
Event History
Frequently Asked Questions
What is the severity of CVE-2020-3315?
CVE-2020-3315 has been classified as a high severity vulnerability due to its potential to allow unauthorized access to bypass file policies.
How do I fix CVE-2020-3315?
To fix CVE-2020-3315, you should upgrade to the latest version of the affected Cisco products or apply any available patches.
Which Cisco products are affected by CVE-2020-3315?
CVE-2020-3315 affects multiple Cisco products including Snort, Cisco Firepower Management Center, and Cisco IOS versions listed in the vulnerability details.
What type of attacks can CVE-2020-3315 enable?
CVE-2020-3315 can enable unauthenticated remote attackers to bypass configured file policies on the affected systems.
Is there a workaround for CVE-2020-3315?
While the primary mitigation for CVE-2020-3315 is to update systems, reviewing and tightening access controls may serve as a temporary workaround.