| Package | Affected versions | Patched versions |
|---|---|---|
| http server | ≥ 2.4.20, < 2.4.40 | 2.4.40 |
| traffic server | ≥ 6.0.0, ≤ 6.2.3≥ 7.0.0, ≤ 7.1.6≥ 8.0.0, ≤ 8.0.3 | |
| swiftnio | ≥ 1.0.0, ≤ 1.4.0 | |
| web gateway | ≥ 7.7.2.0, < 7.7.2.24≥ 7.8.2.0, < 7.8.2.13≥ 8.1.0, < 8.2.0 | 7.7.2.247.8.2.138.2.0 |
| node.js | ≥ 10.0.0, ≤ 10.12.0≥ 10.13.0, < 10.16.3≥ 12.0.0, < 12.8.1≥ 8.0.0, ≤ 8.8.1≥ 8.9.0, < 8.16.1 | 10.16.312.8.18.16.1 |
| communications element manager | = 8.0.0= 8.1.0= 8.1.1= 8.2.0 | |
| graalvm | = 19.2.0 | |
| instantis enterprisetrack | ≥ 17.1, ≤ 17.3 | |
| retail xstore point of service | = 7.1 | |
| jboss core services | = 1.0 | |
| jboss enterprise application platform | = 7.2.0= 7.3.0 | |
| openshift service mesh | = 1.0 | |
| quay | = 3.0.0 | |
| software collections | = 1.0 |
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.
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