{"id":"RLSA-2021:1608","summary":"Moderate: python-cryptography security, bug fix, and enhancement update","details":"The python-cryptography packages contain a Python Cryptographic Authority's (PyCA's) cryptography library, which provides cryptographic primitives and recipes to Python developers.\n\nThe following packages have been upgraded to a later upstream version: python-cryptography (3.2.1). (BZ#1873581, BZ#1891947)\n\nSecurity Fix(es):\n\n* python-cryptography: bleichenbacher timing oracle attack against RSA decryption (CVE-2020-25659)\n\n* python-cryptography: certain sequences of update() calls when symmetrically encrypting very large payloads could result in an integer overflow and lead to buffer overflows (CVE-2020-36242)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.4 Release Notes linked from the References section.","modified":"2026-03-11T05:58:44.401562Z","published":"2021-05-18T05:38:36Z","upstream":["CVE-2020-25659","CVE-2020-36242"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:1608"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1778939"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1873581"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1889988"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1891947"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1907429"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1926226"}],"affected":[{"package":{"name":"python-cryptography","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/python-cryptography?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:3.2.1-4.el8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:1608.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}