rhsa-2023_2165
Vulnerability from csaf_redhat
Published
2023-05-09 09:50
Modified
2024-11-06 02:52
Summary
Red Hat Security Advisory: edk2 security, bug fix, and enhancement update

Notes

Topic
An update for edk2 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. Security Fix(es): * openssl: X.400 address type confusion in X.509 GeneralName (CVE-2023-0286) * edk2: integer underflow in SmmEntryPoint function leads to potential SMM privilege escalation (CVE-2021-38578) * openssl: timing attack in RSA Decryption implementation (CVE-2022-4304) * openssl: double free after calling PEM_read_bio_ex (CVE-2022-4450) * openssl: use-after-free following BIO_new_NDEF (CVE-2023-0215) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.2 Release Notes linked from the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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      "title": "openssl: timing attack in RSA Decryption implementation"
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      "cwe": {
        "id": "CWE-415",
        "name": "Double Free"
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          "text": "2164494"
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        {
          "category": "description",
          "text": "A double-free vulnerability was found in OpenSSL\u0027s PEM_read_bio_ex function. The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and decodes the \"name\" (for example, \"CERTIFICATE\"), any header data, and the payload data. If the function succeeds, then the \"name_out,\" \"header,\" and \"data\" arguments are populated with pointers to buffers containing the relevant decoded data. The caller is responsible for freeing those buffers. Constructing a PEM file that results in 0 bytes of payload data is possible. In this case, PEM_read_bio_ex() will return a failure code but will populate the header argument with a pointer to a freed buffer. A double-free will occur if the caller also frees this buffer. This will most likely lead to a crash. This could be exploited by an attacker who can supply malicious PEM files for parsing to achieve a denial of service attack.",
          "title": "Vulnerability description"
        },
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          "text": "openssl: double free after calling PEM_read_bio_ex",
          "title": "Vulnerability summary"
        },
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          "text": "This flaw is rated as having a Moderate impact as it is less easily exploited and is only vulnerable in unlikely configurations. Additionally, the upstream advisory (linked in External References) also rates it as Moderate.\n\nThe versions of `shim` as shipped with Red Hat Enterprise Linux 8 and 9 are shipping OpenSSL 1.1.1 and 1.0.2, which do not contain the incorrect code, so those are not affected by this CVE.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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      "cve": "CVE-2023-0215",
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          "category": "description",
          "text": "A use-after-free vulnerability was found in OpenSSL\u0027s BIO_new_NDEF function. The public API function BIO_new_NDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally by OpenSSL to support the SMIME, CMS, and PKCS7 streaming capabilities, but it may also be called directly by end-user applications. The function receives a BIO from the caller, prepends a new BIO_f_asn1 filter BIO onto the front of it to form a BIO chain, and then returns the new head of the BIO chain to the caller. Under certain conditions. For example, if a CMS recipient public key is invalid, the new filter BIO is freed, and the function returns a NULL result indicating a failure. However, in this case, the BIO chain is not properly cleaned up, and the BIO passed by the caller still retains internal pointers to the previously freed filter BIO. If the caller then calls BIO_pop() on the BIO, a use-after-free will occur, possibly resulting in a crash.",
          "title": "Vulnerability description"
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
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      "title": "openssl: use-after-free following BIO_new_NDEF"
    },
    {
      "cve": "CVE-2023-0286",
      "cwe": {
        "id": "CWE-704",
        "name": "Incorrect Type Conversion or Cast"
      },
      "discovery_date": "2023-01-25T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2164440"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A type confusion vulnerability was found in OpenSSL when OpenSSL X.400 addresses processing inside an X.509 GeneralName. When CRL checking is enabled (for example, 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 cause a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, of which neither needs 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. In this case, this vulnerability is likely only to affect applications that have implemented their own functionality for retrieving CRLs over a network.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openssl: X.400 address type confusion in X.509 GeneralName",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "For shim in Red Hat Enterprise Linux 8 \u0026 9, is not affected as shim doesn\u0027t support any CRL processing.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-0286"
        },
        {
          "category": "external",
          "summary": "RHBZ#2164440",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2164440"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-0286",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-0286"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-0286",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0286"
        },
        {
          "category": "external",
          "summary": "https://www.openssl.org/news/secadv/20230207.txt",
          "url": "https://www.openssl.org/news/secadv/20230207.txt"
        }
      ],
      "release_date": "2023-02-07T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2023-05-09T09:50:46+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          "category": "impact",
          "details": "Important"
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      ],
      "title": "openssl: X.400 address type confusion in X.509 GeneralName"
    }
  ]
}


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