{"answers":{"affected":"5 open source packages ship an affected version, including h2.","exploited":"There is no known exploitation of GHSA-q6cp-qfwq-4gcv in the wild and no public exploit code.","fix":"Upgrade h2 to a fixed version for your release line: 0.3.26 or 0.4.4.","what":"GHSA-q6cp-qfwq-4gcv is a denial of service vulnerability in h2, published on 3 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-q6cp-qfwq-4gcv and fix it if it is affected.\n\nWhat it is: GHSA-q6cp-qfwq-4gcv is a denial of service vulnerability in h2, published on 3 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of GHSA-q6cp-qfwq-4gcv in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- h2 (crates.io): affected all versions; fixed in 0.3.26\n- h2 (crates.io): affected all versions; fixed in 0.3.26\n- h2 (crates.io): affected from 0.0.0-0; fixed in 0.3.26, 0.4.4\n- h2 (crates.io): affected from 0.4.0; fixed in 0.4.4\n- h2 (crates.io): affected from 0.4.0; fixed in 0.4.4\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/GHSA-q6cp-qfwq-4gcv/ (Markdown: https://insights.sbomify.com/GHSA-q6cp-qfwq-4gcv/index.md)","id":"GHSA-q6cp-qfwq-4gcv","markdown":"https://insights.sbomify.com/GHSA-q6cp-qfwq-4gcv/index.md","name":"GHSA-q6cp-qfwq-4gcv","record":{"aliases":["RUSTSEC-2024-0332"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust HTTP/2 library","requires_auth":"none","summary":"An attacker can cause high CPU usage and service degradation by flooding h2 servers with CONTINUATION frames, impacting availability.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"An attacker can send a flood of CONTINUATION frames, causing `h2` to process them indefinitely. This results in an increase in CPU usage.\n\nTokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency.\n\nMore details at https://seanmonstar.com/blog/hyper-http2-continuation-flood/.\n\nPatches available for 0.4.x and 0.3.x versions.","ecosystems":["crates.io"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"h2 servers vulnerable to degradation of service with CONTINUATION Flood","id":"GHSA-q6cp-qfwq-4gcv","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"denial_of_service","year":"2024"},"n_packages":5,"n_references":null,"packages":[{"ecosystem":"crates.io","fixed":["0.3.26"],"introduced":["0"],"last_affected":[],"package":"h2","purl":null,"source":"GHSA-q6cp-qfwq-4gcv"},{"ecosystem":"crates.io","fixed":["0.3.26"],"introduced":["0"],"last_affected":[],"package":"h2","purl":"pkg:cargo/h2","source":"GHSA-q6cp-qfwq-4gcv"},{"ecosystem":"crates.io","fixed":["0.3.26","0.4.4"],"introduced":["0.0.0-0","0.4.0-0"],"last_affected":[],"package":"h2","purl":"pkg:cargo/h2","source":"RUSTSEC-2024-0332"},{"ecosystem":"crates.io","fixed":["0.4.4"],"introduced":["0.4.0"],"last_affected":[],"package":"h2","purl":null,"source":"GHSA-q6cp-qfwq-4gcv"},{"ecosystem":"crates.io","fixed":["0.4.4"],"introduced":["0.4.0"],"last_affected":[],"package":"h2","purl":"pkg:cargo/h2","source":"GHSA-q6cp-qfwq-4gcv"}],"products":null,"published":"2024-04-03","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"An attacker can cause high CPU usage and service degradation by flooding h2 servers with CONTINUATION frames, impacting availability.","url":"https://insights.sbomify.com/GHSA-q6cp-qfwq-4gcv/"}