{"id":"CVE-2023-37475","state":"PUBLISHED","title":"Attacker-controlled parameter can cause denial of service in hamba avro","description":"Hamba avro is a go lang encoder/decoder implementation of the avro codec specification. In affected versions a well-crafted string passed to avro's `github.com/hamba/avro/v2.Unmarshal()` can throw a `fatal error: runtime: out of memory` which is unrecoverable and can cause denial of service of the consumer of avro. The root cause of the issue is that avro uses part of the input to `Unmarshal()` to determine the size when creating a new slice and hence an attacker may consume arbitrary amounts of memory which in turn may cause the application to crash. This issue has been addressed in commit `b4a402f4` which has been included in release version `2.13.0`. Users are advised to upgrade. There are no known workarounds for this vulnerability.","publishedAt":"2023-07-17T16:36:23.546Z","updatedAt":"2024-10-18T17:38:36.924Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["hamba avro"],"affected":[{"vendor":"hamba","product":"avro","versions":[{"version":"< 2.13.0","status":"affected"}]}],"references":["https://github.com/hamba/avro/security/advisories/GHSA-9x44-9pgq-cf45","https://github.com/hamba/avro/commit/b4a402f41cf44b6094b5131286830ba9bb1eb290"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:06:08.715Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/37xxx/CVE-2023-37475.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-37475","state":"PUBLISHED","datePublished":"2023-07-17T16:36:23.546Z","dateUpdated":"2024-10-18T17:38:36.924Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2023-07-06T13:01:36.999Z"},"containers":{"cna":{"title":"Attacker-controlled parameter can cause denial of service in hamba avro","descriptions":[{"lang":"en","value":"Hamba avro is a go lang encoder/decoder implementation of the avro codec specification. In affected versions a well-crafted string passed to avro's `github.com/hamba/avro/v2.Unmarshal()` can throw a `fatal error: runtime: out of memory` which is unrecoverable and can cause denial of service of the consumer of avro. The root cause of the issue is that avro uses part of the input to `Unmarshal()` to determine the size when creating a new slice and hence an attacker may consume arbitrary amounts of memory which in turn may cause the application to crash. This issue has been addressed in commit `b4a402f4` which has been included in release version `2.13.0`. Users are advised to upgrade. There are no known workarounds for this vulnerability."}],"affected":[{"vendor":"hamba","product":"avro","versions":[{"version":"< 2.13.0","status":"affected"}]}],"references":[{"url":"https://github.com/hamba/avro/security/advisories/GHSA-9x44-9pgq-cf45","name":"https://github.com/hamba/avro/security/advisories/GHSA-9x44-9pgq-cf45","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/hamba/avro/commit/b4a402f41cf44b6094b5131286830ba9bb1eb290","name":"https://github.com/hamba/avro/commit/b4a402f41cf44b6094b5131286830ba9bb1eb290","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2023-07-17T16:36:23.546Z"},"source":{"advisory":"GHSA-9x44-9pgq-cf45","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/hamba/avro/security/advisories/GHSA-9x44-9pgq-cf45","name":"https://github.com/hamba/avro/security/advisories/GHSA-9x44-9pgq-cf45","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/hamba/avro/commit/b4a402f41cf44b6094b5131286830ba9bb1eb290","name":"https://github.com/hamba/avro/commit/b4a402f41cf44b6094b5131286830ba9bb1eb290","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T17:16:30.172Z"}},{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"avro_project","product":"avro","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"2.13.0","versionType":"custom"}],"cpes":["cpe:2.3:a:avro_project:avro:*:*:*:*:*:go:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-10-18T17:29:12.659543Z","id":"CVE-2023-37475","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-10-18T17:38:36.924Z"}}]}}}