QID 44173

Date Published: 2024-02-26

QID 44173: FortiOS Rapid Reset HTTP/2 Vulnerability (FG-IR-23-397)

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly.

Affected Versions:
FortiOS 7.4 versions 7.4.0 through 7.4.1
FortiOS 7.2 versions 7.2.0 through 7.2.6
FortiOS 7.0 versions 7.0.0 through 7.0.13

QID Detection Logic (Authenticated):(LINUX)
Detection checks for vulnerable version of FortiOS.

QID Detection Logic (Unauthenticated):
Detection checks for vulnerable version of FortiOS via SNMP Banner.

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly.

CVSS V3 rated as High - 7.5 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

Vendor has released fixes to address this vulnerability
For more details refer advisory FG-IR-23-397

Workaround:
The vendor advised to remove HTTP/2 support with proxy mode with SSL inspection here.

Vendor References

FG-IR-23-397 - www.fortiguard.com/psirt/FG-IR-23-397

CVEs related to QID 44173

CVE-2023-44487 |

Software Advisories

Advisory ID	Software	Component	Link
FG-IR-23-397			www.fortiguard.com/psirt/FG-IR-23-397

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].