{"id":"GHSA-xrx6-fmxq-rjj2","summary":"Timing attacks in python-rsa","details":"It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA","aliases":["CVE-2020-25658","PYSEC-2020-100"],"modified":"2026-04-21T18:41:57.997159172Z","published":"2021-04-30T17:35:15Z","database_specific":{"nvd_published_at":"2020-11-12T14:15:00Z","cwe_ids":["CWE-327","CWE-385"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-04-20T17:11:41Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25658"},{"type":"WEB","url":"https://github.com/sybrenstuvel/python-rsa/issues/165"},{"type":"WEB","url":"https://github.com/sybrenstuvel/python-rsa/commit/dae8ce0d85478e16f2368b2341632775313d41ed"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2020-25658"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1889972"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25658"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-xrx6-fmxq-rjj2"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/rsa/PYSEC-2020-100.yaml"},{"type":"PACKAGE","url":"https://github.com/sybrenstuvel/python-rsa"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2022:1716"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2021:0637"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWA"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJP"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWA"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJP"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2020:5634"}],"affected":[{"package":{"name":"rsa","ecosystem":"PyPI","purl":"pkg:pypi/rsa"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.1"},{"fixed":"4.7"}]}],"versions":["3.0","3.0.1","3.1","3.1.1","3.1.2","3.1.3","3.1.4","3.2","3.2.1","3.2.2","3.2.3","3.3","3.4","3.4.1","3.4.2","4.0","4.1","4.1.1","4.2","4.3","4.4","4.4.1","4.5","4.6"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-xrx6-fmxq-rjj2/GHSA-xrx6-fmxq-rjj2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}