{"schema_version":"1.7.2","id":"OESA-2023-1430","modified":"2023-07-15T11:05:32Z","published":"2023-07-15T11:05:32Z","upstream":["CVE-2022-4304"],"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)","affected":[{"package":{"ecosystem":"openEuler:22.03-LTS","name":"edk2","purl":"pkg:rpm/openEuler/edk2\u0026distro=openEuler-22.03-LTS"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"202011-12.oe2203"}]}],"ecosystem_specific":{"aarch64":["edk2-debugsource-202011-12.oe2203.aarch64.rpm","edk2-debuginfo-202011-12.oe2203.aarch64.rpm","edk2-devel-202011-12.oe2203.aarch64.rpm"],"noarch":["edk2-help-202011-12.oe2203.noarch.rpm","edk2-ovmf-202011-12.oe2203.noarch.rpm","edk2-aarch64-202011-12.oe2203.noarch.rpm","python3-edk2-devel-202011-12.oe2203.noarch.rpm"],"src":["edk2-202011-12.oe2203.src.rpm"],"x86_64":["edk2-debuginfo-202011-12.oe2203.x86_64.rpm","edk2-debugsource-202011-12.oe2203.x86_64.rpm","edk2-devel-202011-12.oe2203.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1430"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4304"}],"database_specific":{"severity":"Medium"}}