{"id":"OESA-2023-1431","summary":"edk2 security update","details":"EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications. \n\nSecurity Fix(es):\n\nA timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE. For example, in a TLS connection, RSA is commonly used by a client to send an encrypted pre-master secret to the server. An attacker that had observed a genuine connection between a client and a server could use this flaw to send trial messages to the server and record the time taken to process them. After a sufficiently large number of messages the attacker could recover the pre-master secret used for the original connection and thus be able to decrypt the application data sent over that connection.(CVE-2022-4304)","modified":"2026-03-11T06:32:11.923276Z","published":"2023-07-15T11:05:33Z","upstream":["CVE-2022-4304"],"database_specific":{"severity":"Medium"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1431"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4304"}],"affected":[{"package":{"name":"edk2","ecosystem":"openEuler:22.03-LTS-SP1","purl":"pkg:rpm/openEuler/edk2&distro=openEuler-22.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"202011-12.oe2203sp1"}]}],"ecosystem_specific":{"x86_64":["edk2-debugsource-202011-12.oe2203sp1.x86_64.rpm","edk2-devel-202011-12.oe2203sp1.x86_64.rpm","edk2-debuginfo-202011-12.oe2203sp1.x86_64.rpm"],"src":["edk2-202011-12.oe2203sp1.src.rpm"],"noarch":["edk2-help-202011-12.oe2203sp1.noarch.rpm","python3-edk2-devel-202011-12.oe2203sp1.noarch.rpm","edk2-aarch64-202011-12.oe2203sp1.noarch.rpm","edk2-ovmf-202011-12.oe2203sp1.noarch.rpm"],"aarch64":["edk2-debuginfo-202011-12.oe2203sp1.aarch64.rpm","edk2-devel-202011-12.oe2203sp1.aarch64.rpm","edk2-debugsource-202011-12.oe2203sp1.aarch64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2023-1431.json"}}],"schema_version":"1.7.5"}