{"answers":{"affected":"13 open source packages ship an affected version, including grpcio, io.grpc:grpc-protobuf and grpc. It affects 2 products.","exploited":"There is no known exploitation of CVE-2023-32732 in the wild and no public exploit code.","fix":"Upgrade grpcio to a fixed version for your release line: 1.53.1 or 1.54.2.","what":"CVE-2023-32732 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 9 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-32732 and fix it if it is affected.\n\nWhat it is: CVE-2023-32732 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 9 Jun 2023. 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-2023-32732 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- grpcio (PyPI): affected from 1.53.0; fixed in 1.53.1, 1.54.2\n- grpcio (PyPI): affected from 1.53.0; fixed in 1.53.1\n- grpcio (PyPI): affected from 1.53.0; fixed in 1.53.1\n- grpcio (PyPI): affected from 1.54.0; fixed in 1.54.2\n- grpcio (PyPI): affected from 1.54.0; fixed in 1.54.2\n- io.grpc:grpc-protobuf (Maven): affected from 1.53.0; fixed in 1.53.1\n- io.grpc:grpc-protobuf (Maven): affected from 1.53.0; fixed in 1.53.1\n- io.grpc:grpc-protobuf (Maven): affected from 1.54.0; fixed in 1.54.2\n- io.grpc:grpc-protobuf (Maven): affected from 1.54.0; fixed in 1.54.2\n- grpc (RubyGems): affected from 1.53.0; fixed in 1.53.1\n- grpc (RubyGems): affected from 1.53.0; fixed in 1.53.1\n- grpc (RubyGems): affected from 1.54.0; fixed in 1.54.2\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-2023-32732/ (Markdown: https://insights.sbomify.com/CVE-2023-32732/index.md)","id":"CVE-2023-32732","markdown":"https://insights.sbomify.com/CVE-2023-32732/index.md","name":"CVE-2023-32732","record":{"aliases":["BELL-CVE-2023-32732","DEBIAN-CVE-2023-32732","GHSA-9hxf-ppjv-w6rq","PYSEC-2026-1426","UBUNTU-CVE-2023-32732"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"gRPC library","requires_auth":"none","summary":"A malicious client can cause a denial of service by sending malformed base64 headers, disconnecting the gRPC server from HTTP2 proxies.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Google","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"grpc","vendor":"grpc"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-440","name":"Expected Behavior Violation"}],"description":"gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in  https://github.com/grpc/grpc/pull/32309 https://www.google.com/url","ecosystems":["Maven","PyPI","RubyGems"],"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":"Denial-of-Service in gRPC","id":"CVE-2023-32732","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"denial_of_service","year":"2023"},"n_packages":13,"n_references":3,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority because it is Unused","id":"CVE-2023-32733"},"packages":[{"ecosystem":"Maven","fixed":["1.53.1"],"introduced":["1.53.0"],"last_affected":[],"package":"io.grpc:grpc-protobuf","purl":null,"source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"Maven","fixed":["1.53.1"],"introduced":["1.53.0"],"last_affected":[],"package":"io.grpc:grpc-protobuf","purl":"pkg:maven/io.grpc/grpc-protobuf","source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"Maven","fixed":["1.54.2"],"introduced":["1.54.0"],"last_affected":[],"package":"io.grpc:grpc-protobuf","purl":null,"source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"Maven","fixed":["1.54.2"],"introduced":["1.54.0"],"last_affected":[],"package":"io.grpc:grpc-protobuf","purl":"pkg:maven/io.grpc/grpc-protobuf","source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"PyPI","fixed":["1.53.1","1.54.2"],"introduced":["1.53.0","1.54.0"],"last_affected":[],"package":"grpcio","purl":"pkg:pypi/grpcio","source":"PYSEC-2026-1426"},{"ecosystem":"PyPI","fixed":["1.53.1"],"introduced":["1.53.0"],"last_affected":[],"package":"grpcio","purl":null,"source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"PyPI","fixed":["1.53.1"],"introduced":["1.53.0"],"last_affected":[],"package":"grpcio","purl":"pkg:pypi/grpcio","source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"PyPI","fixed":["1.54.2"],"introduced":["1.54.0"],"last_affected":[],"package":"grpcio","purl":null,"source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"PyPI","fixed":["1.54.2"],"introduced":["1.54.0"],"last_affected":[],"package":"grpcio","purl":"pkg:pypi/grpcio","source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"RubyGems","fixed":["1.53.1"],"introduced":["1.53.0"],"last_affected":[],"package":"grpc","purl":null,"source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"RubyGems","fixed":["1.53.1"],"introduced":["1.53.0"],"last_affected":[],"package":"grpc","purl":"pkg:gem/grpc","source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"RubyGems","fixed":["1.54.2"],"introduced":["1.54.0"],"last_affected":[],"package":"grpc","purl":null,"source":"GHSA-9hxf-ppjv-w6rq"},{"ecosystem":"RubyGems","fixed":["1.54.2"],"introduced":["1.54.0"],"last_affected":[],"package":"grpc","purl":"pkg:gem/grpc","source":"GHSA-9hxf-ppjv-w6rq"}],"prev":{"headline":"Information leak in gRPC","id":"CVE-2023-32731"},"products":["gRPC"],"published":"2023-06-09","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-13","vendors":["Google"]},"summary":"A malicious client can cause a denial of service by sending malformed base64 headers, disconnecting the gRPC server from HTTP2 proxies.","url":"https://insights.sbomify.com/CVE-2023-32732/"}