{"id":"CVE-2022-24777","aliases":["EUVD-2023-1873","GHSA-r6ww-5963-7r95"],"status":"published","title":"Denial of Service via reachable assertion in grpc-swift","description":"grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This is due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests. This issue is fixed in version 1.7.2. There are currently no known workarounds.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01177,"percentile":0.68058,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2022-03-25T16:35:09Z","modified":"2026-10-28T02:30:55Z","fixes":[{"ecosystem":"SwiftURL","package":"github.com/grpc/grpc-swift","fixed_in":["1.7.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"SwiftURL","package":"github.com/grpc/grpc-swift","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.2"}]}]},{"source":"osv","ecosystem":"SwiftURL","package":"github.com/grpc/grpc-swift","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.7.2"}]}]}],"products":[{"vendor":"grpc","product":"grpc-swift"},{"vendor":"linuxfoundation","product":"grpc_swift"}],"references":[{"url":"https://github.com/grpc/grpc-swift/security/advisories/GHSA-r6ww-5963-7r95","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/grpc/grpc-swift/commit/858f977f2a51fca2292f384cf7a108dc2e73a3bd","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-24777","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r6ww-5963-7r95"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24777.json","tags":["advisory"]},{"url":"https://github.com/grpc/grpc-swift","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-24777","title":"Denial of Service via reachable assertion in grpc-swift","description":"grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This is due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests. This issue is fixed in version 1.7.2. There are currently no known workarounds.","status":"published","published":"2022-03-25T16:35:09Z","modified":"2025-04-23T18:43:40.348Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:34:34.940806Z"}],"euvd":[{"id":"EUVD-2023-1873","description":"grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This is due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests. This issue is fixed in version 1.7.2. There are currently no known workarounds.","status":"published","published":"2022-03-25T16:35:09Z","modified":"2025-04-23T18:43:40Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:07.950001Z"}],"ghsa":[{"id":"GHSA-r6ww-5963-7r95","title":"Denial of Service via reachable assertion","description":"A grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This was due to incorrect logic when handling `GOAWAY` frames.\n\nThe attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests.\n\nThe issue was discovered by automated fuzz testing and is resolved by fixing the relevant state handling code.","status":"published","published":"2023-06-09T19:33:16Z","modified":"2024-02-09T00:34:19Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:37:36.777238Z"}],"nvd":[{"id":"CVE-2022-24777","description":"grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This is due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests. This issue is fixed in version 1.7.2. There are currently no known workarounds.","status":"published","published":"2022-03-25T17:15:08.653Z","modified":"2026-06-17T04:32:29.913Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:07:14.24948Z"}],"osv":[{"id":"CVE-2022-24777","title":"Denial of Service via reachable assertion in grpc-swift","description":"grpc-swift is the Swift language implementation of gRPC, a remote procedure call (RPC) framework. Prior to version 1.7.2, a grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This is due to incorrect logic when handling GOAWAY frames. The attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests. This issue is fixed in version 1.7.2. There are currently no known workarounds.","status":"published","published":"2022-03-25T16:35:09Z","modified":"2026-10-28T02:30:55.377269374Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:44:24.428403Z"},{"id":"GHSA-r6ww-5963-7r95","title":"Denial of Service via reachable assertion","description":"A grpc-swift server is vulnerable to a denial of service attack via a reachable assertion. This was due to incorrect logic when handling `GOAWAY` frames.\n\nThe attack is low-effort: it takes very little resources to construct and send the required sequence of frames. The impact on availability is high as the server will crash, dropping all in flight connections and requests.\n\nThe issue was discovered by automated fuzz testing and is resolved by fixing the relevant state handling code.","status":"published","published":"2023-06-09T19:33:16Z","modified":"2024-02-09T00:34:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:46:55.480549Z"}]}}