{"answers":{"affected":"2 open source packages ship an affected version, including github.com/grpc/grpc-swift. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-36154 in the wild and no public exploit code.","fix":"Upgrade github.com/grpc/grpc-swift to 1.2.0 or later.","what":"CVE-2021-36154 is a high-severity denial of service vulnerability in n/a, published on 9 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-36154 and fix it if it is affected.\n\nWhat it is: CVE-2021-36154 is a high-severity denial of service vulnerability in n/a, published on 9 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-36154 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/grpc/grpc-swift (SwiftURL): affected all versions; fixed in 1.2.0\n- github.com/grpc/grpc-swift (SwiftURL): affected all versions; fixed in 1.2.0\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/CVE-2021-36154/ (Markdown: https://insights.sbomify.com/CVE-2021-36154/index.md)","id":"CVE-2021-36154","markdown":"https://insights.sbomify.com/CVE-2021-36154/index.md","name":"CVE-2021-36154","record":{"aliases":["GHSA-4rhq-vq24-88gw"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"gRPC Swift library","requires_auth":"none","summary":"Remote attackers can cause denial of service in gRPC Swift by sending many small messages in a single HTTP/2 frame, triggering stack exhaustion.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"grpc_swift","vendor":"linuxfoundation"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"HTTP2ToRawGRPCServerCodec in gRPC Swift 1.1.1 and earlier allows remote attackers to deny service via the delivery of many small messages within a single HTTP/2 frame, leading to Uncontrolled Recursion and stack consumption.","ecosystems":["SwiftURL"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Uncontrolled Recursion in HTTP2ToRawGRPCServerCodec","id":"CVE-2021-36154","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"SwiftURL","product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Uncontrolled Resource Consumption in LengthPrefixedMessageReader","id":"CVE-2021-36155"},"packages":[{"ecosystem":"SwiftURL","fixed":["1.2.0"],"introduced":["0"],"last_affected":[],"package":"github.com/grpc/grpc-swift","purl":null,"source":"GHSA-4rhq-vq24-88gw"},{"ecosystem":"SwiftURL","fixed":["1.2.0"],"introduced":["0"],"last_affected":[],"package":"github.com/grpc/grpc-swift","purl":"pkg:swift/github.com/grpc/grpc-swift","source":"GHSA-4rhq-vq24-88gw"}],"prev":{"headline":"Incomplete Internal State Distinction in GRPCWebToHTTP2ServerCodec","id":"CVE-2021-36153"},"products":["n/a"],"published":"2021-07-09","related":[{"cvss_score":7.5,"headline":"Denial of Service via reachable assertion in grpc-swift","id":"CVE-2022-24777","kev_date_added":null,"published":"2022-03-25"},{"cvss_score":7.5,"headline":"Incomplete Internal State Distinction in GRPCWebToHTTP2ServerCodec","id":"CVE-2021-36153","kev_date_added":null,"published":"2021-07-09"},{"cvss_score":7.5,"headline":"Uncontrolled Resource Consumption in LengthPrefixedMessageReader","id":"CVE-2021-36155","kev_date_added":null,"published":"2021-07-09"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Remote attackers can cause denial of service in gRPC Swift by sending many small messages in a single HTTP/2 frame, triggering stack exhaustion.","url":"https://insights.sbomify.com/CVE-2021-36154/"}