github - ghsa-w5hm-w8cx-wrwr

ghsa-w5hm-w8cx-wrwr

Vulnerability from github

Published

2022-05-24 17:36

Modified

2023-07-28 21:30

Severity ?

6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Details

A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.

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{
  "affected": [],
  "aliases": [
    "CVE-2020-27777"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-15T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel.",
  "id": "GHSA-w5hm-w8cx-wrwr",
  "modified": "2023-07-28T21:30:34Z",
  "published": "2022-05-24T17:36:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27777"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900844"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next\u0026id=bd59380c5ba4147dcbaad3e582b55ccfd120b764"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2020/10/09/1"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2020/11/23/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2020-27777

Vulnerability from cvelistv5

Published

2020-12-15 16:57

Modified

2024-08-04 16:25

Severity ?

Summary

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1900844	x_refsource_MISC
	https://www.openwall.com/lists/oss-security/2020/10/09/1	x_refsource_MISC
	https://www.openwall.com/lists/oss-security/2020/11/23/2	x_refsource_MISC
	https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next&id=bd59380c5ba4147dcbaad3e582b55ccfd120b764	x_refsource_MISC

Impacted products

▼	Vendor	Product
	n/a	kernel

Show details on NVD website

JSON

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{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T16:25:42.438Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1900844"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2020/10/09/1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2020/11/23/2"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next\u0026id=bd59380c5ba4147dcbaad3e582b55ccfd120b764"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kernel",
          "vendor": "n/a",
          "versions": [
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              "status": "affected",
              "version": "kernel 5.10-rc1"
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        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "CWE-862",
              "lang": "en",
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      ],
      "providerMetadata": {
        "dateUpdated": "2020-12-15T16:57:45",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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      "references": [
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          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?h=next\u0026id=bd59380c5ba4147dcbaad3e582b55ccfd120b764"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-27777",
          "STATE": "PUBLIC"
        },
        "affects": {
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            }
          ]
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        "problemtype": {
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        },
        "references": {
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            },
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            },
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    "dateReserved": "2020-10-27T00:00:00",
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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