Strix
26.1K

CVE-2024-20363

MEDIUMCVSS 5.8/10EPSS 0.37%

Last modified

CVE-2024-20363 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. Multiple Cisco products are affected by a vulnerability in the Snort Intrusion Prevention System (IPS) rule engine that could allow an unauthenticated, remote attacker to bypass the configured rules on an affected system. This vulnerability is due to incorrect HTTP packet handling. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

Multiple Cisco products are affected by a vulnerability in the Snort Intrusion Prevention System (IPS) rule engine that could allow an unauthenticated, remote attacker to bypass the configured rules on an affected system. This vulnerability is due to incorrect HTTP packet handling. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.

Metrics

CVSS 3.1
5.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

EPSS Probability
0.37%

28.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Threat Defense7.4.0
CiscoUnified Threat Defense Snort Intrusion Prevention System Engine17.6.4
CiscoUnified Threat Defense Snort Intrusion Prevention System Engine17.6.5
CiscoUnified Threat Defense Snort Intrusion Prevention System Engine17.12.1a
CiscoUnified Threat Defense Snort Intrusion Prevention System Engine17.12.2
CiscoSnort>= 3.0.0-233, < 3.1.69.0

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-20363?
Multiple Cisco products are affected by a vulnerability in the Snort Intrusion Prevention System (IPS) rule engine that could allow an unauthenticated, remote attacker to bypass the configured rules on an affected system. This vulnerability is due to incorrect HTTP packet handling. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.
How severe is CVE-2024-20363?
CVE-2024-20363 has a CVSS score of 5.8/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20363?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20363?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST