{"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-2021-36155 in the wild and no public exploit code.","fix":"Upgrade github.com/grpc/grpc-swift to 1.2.0 or later.","what":"CVE-2021-36155 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-2021-36155 and fix it if it is affected.\n\nWhat it is: CVE-2021-36155 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-2021-36155 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-2021-36155/ (Markdown: https://insights.sbomify.com/CVE-2021-36155/index.md)","id":"CVE-2021-36155","markdown":"https://insights.sbomify.com/CVE-2021-36155/index.md","name":"CVE-2021-36155","record":{"aliases":["GHSA-rxmj-hg9v-vp3p"],"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 triggering uncontrolled resource consumption via arbitrary buffer allocations.","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-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"LengthPrefixedMessageReader in gRPC Swift 1.1.0 and earlier allocates buffers of arbitrary length, which allows remote attackers to cause uncontrolled resource consumption and deny service.","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 Resource Consumption in LengthPrefixedMessageReader","id":"CVE-2021-36155","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":"Path traversal in Grafana Loki","id":"CVE-2021-36156"},"packages":[{"ecosystem":"SwiftURL","fixed":["1.2.0"],"introduced":["0"],"last_affected":[],"package":"github.com/grpc/grpc-swift","purl":null,"source":"GHSA-rxmj-hg9v-vp3p"},{"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-rxmj-hg9v-vp3p"}],"prev":{"headline":"Uncontrolled Recursion in HTTP2ToRawGRPCServerCodec","id":"CVE-2021-36154"},"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 Recursion in HTTP2ToRawGRPCServerCodec","id":"CVE-2021-36154","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 triggering uncontrolled resource consumption via arbitrary buffer allocations.","url":"https://insights.sbomify.com/CVE-2021-36155/"}