HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server. Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected.
Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute. ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases.
Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.
CVE ID: CVE-2024-31309
Vendor: Apache Software Foundation
Product: Apache Traffic Server
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 16.94% (scored less or equal to compared to others)
EPSS Date: 2025-03-14 (when was this score calculated)