{"id":"CVE-2024-34353","aliases":["GHSA-9ggc-845v-gcgv"],"url":"https://o3.security/vulnerability/CVE-2024-34353","summary":"matrix-sdk-crypto contains a log exposure of private key of the server-side key backup","details":"### Introduction\n\nIn Matrix, the server-side *key backup* stores encrypted copies of Matrix message keys. This facilitates key sharing between a user's devices and provides a redundant copy in case all devices are lost. The key backup uses asymmetric cryptography, with each server-side key backup assigned a unique public-private key pair.\n\n### Impact\n\nDue to a logic bug introduced in https://github.com/matrix-org/matrix-rust-sdk/pull/2961/commits/71136e44c03c79f80d6d1a2446673bc4d53a2067, the matrix-sdk-crypto crate version 0.7.0 will sometimes log the private part of the backup key pair to Rust debug logs (using the `tracing` crate).\n\n### Patches\nThis issue has been resolved in matrix-sdk-crypto [version 0.7.1](https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1).\n\n### Workarounds\nNone.\n\n### References\n\n- [crates.io release](https://crates.io/crates/matrix-sdk-crypto/0.7.1)\n\n### For more information\n\nIf you have any questions or comments about this advisory, please email us at [security at matrix.org](mailto:security@matrix.org).\n","published":"2024-05-13T15:43:10.574Z","modified":"2026-11-04T02:46:17.489843497Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"matrix-sdk-crypto","fixedVersion":"0.7.1"}],"fix":{"url":"https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067","label":"matrix-org/matrix-rust-sdk@71136e4"},"references":[{"type":"WEB","url":"https://crates.io/crates/matrix-sdk-crypto/0.7.1"},{"type":"WEB","url":"https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34353.json"},{"type":"ADVISORY","url":"https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-9ggc-845v-gcgv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34353"},{"type":"FIX","url":"https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067"},{"type":"FIX","url":"https://github.com/matrix-org/matrix-rust-sdk/commit/fa10bbb5dd0f9120a51aa1854cec752e25790bb0"},{"type":"PACKAGE","url":"https://github.com/matrix-org/matrix-rust-sdk"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-04T02:46:17.489843497Z"}}