{"id":"CVE-2023-41097","aliases":["EUVD-2023-45617","GHSA-67c4-7f3g-r556"],"status":"published","title":"Potential Timing vulnerability in CBC PKCS7 padding calculations","description":"An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00298,"percentile":0.22725,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-203","CWE-208","CWE-327"],"published":"2023-12-21T20:33:04Z","modified":"2026-10-28T02:31:07Z","products":[{"vendor":"silabs","product":"gecko_software_development_kit"},{"vendor":"silabs.com","product":"gsdk"}],"references":[{"url":"https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm0000007rArIAI?operationContext=S1","tags":["vendor-advisory","x_transferred","Permissions Required","advisory"]},{"url":"https://github.com/SiliconLabs/gecko_sdk/releases","tags":["patch","x_transferred","Release Notes","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-41097","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-67c4-7f3g-r556"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/41xxx/CVE-2023-41097.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-41097","title":"Potential Timing vulnerability in CBC PKCS7 padding calculations","description":"An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.","status":"published","published":"2023-12-21T20:33:04.967Z","modified":"2025-04-23T16:23:05.829Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-208","CWE-327"],"updated_at":"2026-11-02T14:35:18.88314Z"}],"euvd":[{"id":"EUVD-2023-45617","description":"An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.","status":"published","published":"2023-12-21T20:33:04Z","modified":"2025-04-23T16:23:05Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:12.74685Z"}],"ghsa":[{"id":"GHSA-67c4-7f3g-r556","title":"An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM...","description":"An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.\n\n","status":"published","published":"2023-12-21T21:30:31Z","modified":"2024-01-12T05:08:34Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-203","CWE-208"],"updated_at":"2026-11-02T14:55:24.003446Z"}],"nvd":[{"id":"CVE-2023-41097","description":"An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.","status":"published","published":"2023-12-21T21:15:08.02Z","modified":"2026-06-17T06:20:33.473Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-208","CWE-327","CWE-203"],"updated_at":"2026-11-02T14:08:57.117371Z"}],"osv":[{"id":"CVE-2023-41097","title":"Potential Timing vulnerability in CBC PKCS7 padding calculations","description":"An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.","status":"published","published":"2023-12-21T20:33:04.967Z","modified":"2026-10-28T02:31:07.567036262Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-208","CWE-327"],"updated_at":"2026-11-02T15:44:33.244128Z"}]}}