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_V3 - 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.

Show details on source website

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  "aliases": [
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  "database_specific": {
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-15T17:15:00Z",
    "severity": "HIGH"
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  "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"
    },
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      "url": "https://www.openwall.com/lists/oss-security/2020/11/23/2"
    }
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  "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

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.

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

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