Bug 2269175 (CVE-2024-2653, VU#421644.6)

Summary: CVE-2024-2653 amphp: CONTINUATION frames DoS
Product: [Other] Security Response Reporter: Nick Tait <ntait>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedCC: security-response-team
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A vulnerability was found in how amphp implements the HTTP/2 protocol. There are insufficient limitations placed on the amount of CONTINUATION frames that can be sent within a single stream. This issue could allow an unauthenticated remote attacker to send packets to vulnerable servers, which could use up compute or memory resources to cause a Denial of Service.
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Bug Depends On: 2273040    
Bug Blocks: 2268258    

Description Nick Tait 2024-03-12 15:39:44 UTC 
This description was provided in the disclosure from VINCE:

The AMPHP implementation of HTTP/2 will collect CONTINUATION frames in an unbounded buffer and will not check a limit until it has received the set END_HEADERS flag, resulting in an OOM crash.
Comment 6 Nick Tait 2024-04-03 19:13:47 UTC 
Created nextcloud tracking bugs for this issue:

Affects: fedora-all [bug 2273040]