Vulnerability-Lookup

RHSA-2022:0133

Vulnerability from csaf_redhat - Published: 2022-01-12 14:41 - Updated: 2025-11-21 18:27

Summary

Red Hat Security Advisory: Red Hat Virtualization Host security and bug fix update [ovirt-4.4.9] Async #2

Severity

Important

Notes

Topic: An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 8. 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: The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Security Fix(es): * samba: Active Directory (AD) domain user could become root on domain members (CVE-2020-25717) 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.

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.

CVE-2020-25717

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CWE-20 - Improper Input Validation

Affected products

Fixed 2 products

Product	Identifier	Version	Remediation
Unresolved product id: 8Base-RHV-Hypervisor-4:redhat-virtualization-host-0:4.4.9-202201072228_8.5.src		—	Vendor Fix fix Workaround
Unresolved product id: 8Base-RHV-Hypervisor-4:redhat-virtualization-host-image-update-0:4.4.9-202201072228_8.5.x86_64		—	Vendor Fix fix Workaround

Known not affected 4 products

Product	Version	Remediation
Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.9-4.el8ev.src	—	Workaround
Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.9-4.el8ev.x86_64	—	Workaround
Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.4.9-4.el8ev.x86_64	—	Workaround
Unresolved product id: 8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.9-4.el8ev.noarch	—	Workaround

Threats

Impact Important

References

10 references

URL	Category
https://access.redhat.com/errata/RHSA-2022:0133	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2019672	external
https://bugzilla.redhat.com/show_bug.cgi?id=2037758	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2020-25717	self
https://bugzilla.redhat.com/show_bug.cgi?id=2019672	external
https://www.cve.org/CVERecord?id=CVE-2020-25717	external
https://nvd.nist.gov/vuln/detail/CVE-2020-25717	external
https://www.samba.org/samba/security/CVE-2020-257…	external

Acknowledgments

the Samba project

Catalyst and the Samba Team Andrew Bartlett

JSON

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      "cve": "CVE-2020-25717",
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        "name": "Improper Input Validation"
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      "flags": [
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            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.4.9-4.el8ev.x86_64",
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          "text": "A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "samba: Active Directory (AD) domain user could become root on domain members",
          "title": "Vulnerability summary"
        },
        {
          "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"
        }
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      "product_status": {
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        {
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      ],
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      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2022-01-12T14:41:12+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/2974891",
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        },
        {
          "category": "workaround",
          "details": "Setting \"gensec:require_pac=true\" in the smb.conf makes, due to a cache prime in winbind, the DOMAIN\\user lookup succeed, provided nss_winbind is in use, \u0027winbind use default domain = no\u0027 (the default) and no error paths are hit.  \n\nIt would be prudent to pre-create disabled users in Active Directory matching on all privileged names not held in Active Directory, eg \n~~~\n samba-tool user add root -H ldap://$SERVER -U$USERNAME%$PASSWORD --random-password\n samba-tool user add ubuntu -H ldap://$SERVER -U$USERNAME%$PASSWORD --random-password\n ~~~\n (repeat for eg all system users under 1000 in /etc/passwd or special to any other AD-connected services, eg perhaps \"admin\" for a web-app)",
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          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
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            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.9-4.el8ev.src",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-0:4.4.9-4.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-release-virtualization-host-content-0:4.4.9-4.el8ev.x86_64",
            "8Base-RHV-HypervisorBuild-4:redhat-virtualization-host-image-update-placeholder-0:4.4.9-4.el8ev.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "samba: Active Directory (AD) domain user could become root on domain members"
    }
  ]
}

CVE-2020-25717 (GCVE-0-2020-25717)

Vulnerability from cvelistv5 – Published: 2022-02-18 00:00 – Updated: 2024-08-04 15:40

Summary

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.

Severity ?

No CVSS data available.

CWE

CWE-20

Assigner

redhat

References

3 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2019672
https://www.samba.org/samba/security/CVE-2020-257…
https://security.gentoo.org/glsa/202309-06	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
n/a	samba	Affected: samba 4.15.2, samba 4.14.10, samba 4.13.14

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:40:36.637Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2019672"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.samba.org/samba/security/CVE-2020-25717.html"
          },
          {
            "name": "GLSA-202309-06",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202309-06"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "samba",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "samba 4.15.2, samba 4.14.10, samba 4.13.14"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-09-17T08:06:17.315Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2019672"
        },
        {
          "url": "https://www.samba.org/samba/security/CVE-2020-25717.html"
        },
        {
          "name": "GLSA-202309-06",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202309-06"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2020-25717",
    "datePublished": "2022-02-18T00:00:00.000Z",
    "dateReserved": "2020-09-16T00:00:00.000Z",
    "dateUpdated": "2024-08-04T15:40:36.637Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2022:0133

CVE-2020-25717 (GCVE-0-2020-25717)

Tags

Sightings

Nomenclature