An update for shim is now available for openEuler-20.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2024-1185 Final 1.0 1.0 2024-02-23 Initial 2024-02-23 2024-02-23 openEuler SA Tool V1.0 2024-02-23 shim security update An update for shim is now available for openEuler-20.03-LTS-SP1. Initial UEFI bootloader that handles chaining to a trusted full \ bootloader under secure boot environments. Security Fix(es): A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.(CVE-2023-0464) An update for shim is now available for openEuler-20.03-LTS-SP1. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High shim https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1185 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-0464 https://nvd.nist.gov/vuln/detail/CVE-2023-0464 openEuler-20.03-LTS-SP1 shim-15-28.oe1.aarch64.rpm shim-debugsource-15-28.oe1.noarch.rpm shim-debuginfo-15-28.oe1.noarch.rpm shim-15-28.oe1.src.rpm shim-15-28.oe1.x86_64.rpm A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function. 2024-02-23 CVE-2023-0464 openEuler-20.03-LTS-SP1 High 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H shim security update 2024-02-23 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1185