FKIE_CVE-2022-42335

Vulnerability from fkie_nvd - Published: 2023-04-25 13:15 - Updated: 2024-11-21 07:24
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.
References
security@xen.orghttp://www.openwall.com/lists/oss-security/2023/04/25/1Mailing List, Third Party Advisory
security@xen.orghttp://xenbits.xen.org/xsa/advisory-430.htmlPatch, Vendor Advisory
security@xen.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/
security@xen.orghttps://security.gentoo.org/glsa/202402-07
security@xen.orghttps://xenbits.xenproject.org/xsa/advisory-430.txtPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/04/25/1Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://xenbits.xen.org/xsa/advisory-430.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202402-07
af854a3a-2127-422b-91ae-364da2661108https://xenbits.xenproject.org/xsa/advisory-430.txtPatch, Vendor Advisory
Impacted products
Vendor Product Version
xen xen 4.17.0
fedoraproject fedora 38
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:xen:xen:4.17.0:*:*:*:*:*:x86:*",
              "matchCriteriaId": "EBC05EF9-E4DE-45AA-873E-F91A3530FA4E",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*",
              "matchCriteriaId": "CC559B26-5DFC-4B7A-A27C-B77DE755DFF9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control."
    }
  ],
  "id": "CVE-2022-42335",
  "lastModified": "2024-11-21T07:24:46.673",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-04-25T13:15:09.643",
  "references": [
    {
      "source": "security@xen.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
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      "url": "http://www.openwall.com/lists/oss-security/2023/04/25/1"
    },
    {
      "source": "security@xen.org",
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      "url": "http://xenbits.xen.org/xsa/advisory-430.html"
    },
    {
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      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/"
    },
    {
      "source": "security@xen.org",
      "url": "https://security.gentoo.org/glsa/202402-07"
    },
    {
      "source": "security@xen.org",
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        "Vendor Advisory"
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      "url": "https://xenbits.xenproject.org/xsa/advisory-430.txt"
    },
    {
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      "tags": [
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        "Third Party Advisory"
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    },
    {
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      "tags": [
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        "Vendor Advisory"
      ],
      "url": "http://xenbits.xen.org/xsa/advisory-430.html"
    },
    {
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      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "tags": [
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        "Vendor Advisory"
      ],
      "url": "https://xenbits.xenproject.org/xsa/advisory-430.txt"
    }
  ],
  "sourceIdentifier": "security@xen.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Detection rules are retrieved from Rulezet.