An update for shim is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS and openEuler-22.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2023-1121 Final 1.0 1.0 2023-02-24 Initial 2023-02-24 2023-02-24 openEuler SA Tool V1.0 2023-02-24 shim security update An update for shim is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS and openEuler-22.03-LTS-SP1. Initial UEFI bootloader that handles chaining to a trusted full bootloader under secure boot environments. Security Fix(es): There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.(CVE-2023-0286) An update for shim is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS and openEuler-22.03-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-2023-1121 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-0286 https://nvd.nist.gov/vuln/detail/CVE-2023-0286 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP3 openEuler-22.03-LTS openEuler-22.03-LTS-SP1 shim-15-26.oe1.aarch64.rpm shim-15-26.oe1.aarch64.rpm shim-15.4-8.oe2203.aarch64.rpm shim-15.6-9.oe2203sp1.aarch64.rpm shim-debuginfo-15-26.oe1.noarch.rpm shim-debugsource-15-26.oe1.noarch.rpm shim-debuginfo-15-26.oe1.noarch.rpm shim-debugsource-15-26.oe1.noarch.rpm shim-debugsource-15.4-8.oe2203.noarch.rpm shim-debuginfo-15.4-8.oe2203.noarch.rpm shim-debugsource-15.6-9.oe2203sp1.noarch.rpm shim-debuginfo-15.6-9.oe2203sp1.noarch.rpm shim-15-26.oe1.src.rpm shim-15-26.oe1.src.rpm shim-15.4-8.oe2203.src.rpm shim-15.6-9.oe2203sp1.src.rpm shim-15-26.oe1.x86_64.rpm shim-15-26.oe1.x86_64.rpm shim-15.4-8.oe2203.x86_64.rpm shim-15.6-9.oe2203sp1.x86_64.rpm There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network. 2023-02-24 CVE-2023-0286 openEuler-20.03-LTS-SP1 openEuler-20.03-LTS-SP3 openEuler-22.03-LTS openEuler-22.03-LTS-SP1 High 7.4 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H shim security update 2023-02-24 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1121