{
  "Definition": [
    {
      "ID": "oval:org.altlinux.errata:def:20234655",
      "Version": "oval:org.altlinux.errata:def:20234655",
      "Class": "patch",
      "Metadata": {
        "Title": "ALT-PU-2023-4655: package `shim` update to version 15.7-alt3",
        "AffectedList": [
          {
            "Family": "unix",
            "Platforms": [
              "ALT Linux branch c9f2"
            ],
            "Products": [
              "ALT SPWorkstation",
              "ALT SPServer"
            ]
          }
        ],
        "References": [
          {
            "RefID": "ALT-PU-2023-4655",
            "RefURL": "https://errata.altlinux.org/ALT-PU-2023-4655",
            "Source": "ALTPU"
          },
          {
            "RefID": "BDU:2022-03372",
            "RefURL": "https://bdu.fstec.ru/vul/2022-03372",
            "Source": "BDU"
          },
          {
            "RefID": "CVE-2022-28733",
            "RefURL": "https://nvd.nist.gov/vuln/detail/CVE-2022-28733",
            "Source": "CVE"
          },
          {
            "RefID": "CVE-2022-28737",
            "RefURL": "https://nvd.nist.gov/vuln/detail/CVE-2022-28737",
            "Source": "CVE"
          }
        ],
        "Description": "This update upgrades shim to version 15.7-alt3. \nSecurity Fix(es):\n\n * BDU:2022-03372: Уязвимость функции grub_net_recv_ip4_packets программы-загрузчика операционных систем Grub, позволяющая нарушителю выполнить произвольный код путем отправки специально сформированных IP-пакетов\n\n * CVE-2022-28733: Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm-\u003etotal_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.\n\n * CVE-2022-28737: There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.",
        "Advisory": {
          "From": "errata.altlinux.org",
          "Severity": "High",
          "Rights": "Copyright 2024 BaseALT Ltd.",
          "Issued": {
            "Date": "2023-08-04"
          },
          "Updated": {
            "Date": "2023-08-04"
          },
          "BDUs": [
            {
              "ID": "BDU:2022-03372",
              "CVSS": "AV:N/AC:H/Au:N/C:C/I:C/A:C",
              "CVSS3": "AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "CWE": "CWE-191",
              "Href": "https://bdu.fstec.ru/vul/2022-03372",
              "Impact": "High",
              "Public": "20220607"
            }
          ],
          "CVEs": [
            {
              "ID": "CVE-2022-28733",
              "CVSS3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "CWE": "CWE-191",
              "Href": "https://nvd.nist.gov/vuln/detail/CVE-2022-28733",
              "Impact": "High",
              "Public": "20230720"
            },
            {
              "ID": "CVE-2022-28737",
              "CVSS3": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
              "CWE": "CWE-787",
              "Href": "https://nvd.nist.gov/vuln/detail/CVE-2022-28737",
              "Impact": "High",
              "Public": "20230720"
            }
          ],
          "AffectedCPEs": {
            "CPEs": [
              "cpe:/o:alt:spworkstation:8.4",
              "cpe:/o:alt:spserver:8.4"
            ]
          }
        }
      },
      "Criteria": {
        "Operator": "AND",
        "Criterions": [
          {
            "TestRef": "oval:org.altlinux.errata:tst:3001",
            "Comment": "ALT Linux must be installed"
          }
        ],
        "Criterias": [
          {
            "Operator": "OR",
            "Criterions": [
              {
                "TestRef": "oval:org.altlinux.errata:tst:20234655001",
                "Comment": "shim-unsigned is earlier than 0:15.7-alt3"
              }
            ]
          }
        ]
      }
    }
  ]
}