{"id":"CVE-2021-43668","aliases":["EUVD-2021-2303","GHSA-5m8f-chrv-7rw5","UBUNTU-CVE-2021-43668"],"status":"published","title":"Denial of Service in Go-Ethereum","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00259,"percentile":0.1777,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2021-11-18T15:05:20Z","modified":"2026-10-20T10:55:02Z","affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/ethereum/go-ethereum","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.10.9"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/ethereum/go-ethereum","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.10.9"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0+git20150214.e9e2c8f-1","0+git20150819.1a9d62f-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20170302.0.3c5717c-5","0.0~git20170725.0.b89cc31-1","0.0~git20170725.0.b89cc31-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20170725.0.b89cc31-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200815.5c35d60-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200815.5c35d60-1","0.0~git20200815.5c35d60-2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200815.5c35d60-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200815.5c35d60-2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"golang-goleveldb","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20200815.5c35d60-2"]}],"products":[{"vendor":"ethereum","product":"go_ethereum"}],"references":[{"url":"https://github.com/ethereum/go-ethereum/issues/23866","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43668","tags":["advisory"]},{"url":"https://github.com/syndtr/goleveldb/issues/373","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5m8f-chrv-7rw5"},{"url":"https://github.com/ethereum/go-ethereum","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-43668","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-43668","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-43668","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","status":"published","published":"2021-11-18T15:05:20Z","modified":"2024-08-04T04:03:08.581Z","updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-2303","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","status":"published","published":"2021-11-18T15:05:20Z","modified":"2024-08-04T04:03:08Z","updated_at":"2026-11-03T03:24:13.772922Z"}],"ghsa":[{"id":"GHSA-5m8f-chrv-7rw5","title":"Denial of Service in Go-Ethereum","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","status":"published","published":"2021-11-23T18:04:47Z","modified":"2023-09-18T19:45:30Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:37:05.567008Z"}],"nvd":[{"id":"CVE-2021-43668","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","status":"published","published":"2021-11-18T16:15:09.23Z","modified":"2026-06-17T04:11:15Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:01.428028Z"}],"osv":[{"id":"CVE-2021-43668","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","status":"published","published":"2021-11-18T16:15:09.23Z","modified":"2026-10-20T10:55:02.641361397Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:21.877444Z"},{"id":"GHSA-5m8f-chrv-7rw5","title":"Denial of Service in Go-Ethereum","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","status":"published","published":"2021-11-23T18:04:47Z","modified":"2023-11-08T04:07:11.261421Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:46:38.553953Z"},{"id":"UBUNTU-CVE-2021-43668","description":"Go-Ethereum 1.10.9 nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with \"runtime error: invalid memory address or nil pointer dereference\" and arise a SEGV signal.","status":"published","published":"2021-11-18T16:15:00Z","modified":"2026-10-17T12:56:01.347623718Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:29.220315Z"}]}}