{"containers":{"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-06-16T17:11:53.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"tags":["x_refsource_MISC"],"url":"https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm"},{"tags":["x_refsource_MISC"],"url":"https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3"},{"tags":["x_refsource_MISC"],"url":"https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-34813","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm","refsource":"MISC","url":"https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm"},{"name":"https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3","refsource":"MISC","url":"https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3"},{"name":"https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b","refsource":"MISC","url":"https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T00:26:54.020Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b"}]}]},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2021-34813","datePublished":"2021-06-16T17:11:53.000Z","dateReserved":"2021-06-16T00:00:00.000Z","dateUpdated":"2024-08-04T00:26:54.020Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}