{"schema_version":"1.7.2","id":"OESA-2024-1120","modified":"2024-02-02T11:06:53Z","published":"2024-02-02T11:06:53Z","upstream":["CVE-2023-40547","CVE-2023-40548","CVE-2023-40549","CVE-2023-40550","CVE-2023-40551"],"summary":"shim security update","details":"Initial UEFI bootloader that handles chaining to a trusted full \\ bootloader under secure boot environments.\r\n\r\nSecurity Fix(es):\r\n\r\nA remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise.(CVE-2023-40547)\r\n\r\nA buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.(CVE-2023-40548)\r\n\r\nAn out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.(CVE-2023-40549)\r\n\r\nAn out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system\u0026apos;s boot phase.(CVE-2023-40550)\r\n\r\nA flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system\u0026apos;s boot phase.(CVE-2023-40551)","affected":[{"package":{"ecosystem":"openEuler:22.03-LTS-SP3","name":"shim","purl":"pkg:rpm/openEuler/shim\u0026distro=openEuler-22.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.6-19.oe2203sp3"}]}],"ecosystem_specific":{"aarch64":["shim-debuginfo-15.6-19.oe2203sp3.aarch64.rpm","shim-15.6-19.oe2203sp3.aarch64.rpm","shim-debugsource-15.6-19.oe2203sp3.aarch64.rpm"],"src":["shim-15.6-19.oe2203sp3.src.rpm"],"x86_64":["shim-debuginfo-15.6-19.oe2203sp3.x86_64.rpm","shim-15.6-19.oe2203sp3.x86_64.rpm","shim-debugsource-15.6-19.oe2203sp3.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1120"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40547"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40548"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40549"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40550"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40551"}],"database_specific":{"severity":"High"}}