github - ghsa-gj84-8vfx-q3vm

ghsa-gj84-8vfx-q3vm

Vulnerability from github

Published

2025-10-09 15:31

Modified

2025-10-09 15:31

Severity ?

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

Details

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, SSSD does not enable the Kerberos local authentication plugin (sssd_krb5_localauth_plugin), allowing an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users. This can result in unauthorized access or privilege escalation on domain-joined Linux hosts.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-11561"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-09T14:15:54Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, SSSD does not enable the Kerberos local authentication plugin (sssd_krb5_localauth_plugin), allowing an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users. This can result in unauthorized access or privilege escalation on domain-joined Linux hosts.",
  "id": "GHSA-gj84-8vfx-q3vm",
  "modified": "2025-10-09T15:31:03Z",
  "published": "2025-10-09T15:31:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11561"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2025-11561"
    },
    {
      "type": "WEB",
      "url": "https://blog.async.sg/kerberos-ldr"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402727"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-11561 (GCVE-0-2025-11561)

Vulnerability from cvelistv5

Published

2025-10-09 13:37

Modified

2025-10-10 14:27

Severity ?

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

CWE

CWE-269 - Improper Privilege Management

Summary

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.

References

▼	URL	Tags
	https://access.redhat.com/security/cve/CVE-2025-11561	vdb-entry, x_refsource_REDHAT
	https://blog.async.sg/kerberos-ldr
	https://bugzilla.redhat.com/show_bug.cgi?id=2402727	issue-tracking, x_refsource_REDHAT

Impacted products

Vendor

Product

Version

▼

Red Hat

Red Hat Enterprise Linux 10

cpe:/o:redhat:enterprise_linux:10

Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-11561",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-09T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
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          "shortName": "CISA-ADP"
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    "cna": {
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            "cpe:/o:redhat:enterprise_linux:10"
          ],
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          "packageName": "sssd",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat"
        },
        {
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          "cpes": [
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          ],
          "defaultStatus": "unknown",
          "packageName": "sssd",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
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          ],
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          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
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          "cpes": [
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "affected",
          "packageName": "rhcos",
          "product": "Red Hat OpenShift Container Platform 4",
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      "credits": [
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      ],
      "metrics": [
        {
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              "value": "Important"
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            "type": "Red Hat severity rating"
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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        },
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          "time": "2025-10-09T00:00:00+00:00",
          "value": "Made public."
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      "workarounds": [
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        }
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      "x_redhatCweChain": "CWE-269: Improper Privilege Management"
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  "cveMetadata": {
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    "assignerShortName": "redhat",
    "cveId": "CVE-2025-11561",
    "datePublished": "2025-10-09T13:37:53.089Z",
    "dateReserved": "2025-10-09T13:03:30.189Z",
    "dateUpdated": "2025-10-10T14:27:32.322Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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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