FKIE_CVE-2026-68744

Vulnerability from fkie_nvd - Published: 2026-08-04 06:16 - Updated: 2026-08-31 19:17
Severity
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-68744Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2509761Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
fedoraproject sssd -
redhat openshift_container_platform 4.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
To clipboard 

{
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          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
          ],
          "defaultStatus": "affected",
          "packageName": "sssd",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat"
        },
        {
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          "cpes": [
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          ],
          "defaultStatus": "unaffected",
          "packageName": "sssd",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
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          "cpes": [
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          ],
          "defaultStatus": "affected",
          "packageName": "sssd",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
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          "cpes": [
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          "defaultStatus": "affected",
          "packageName": "sssd",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
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          "cpes": [
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          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        },
        {
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          "cpes": [
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          ],
          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-8",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
        },
        {
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          "vendor": "Red Hat"
        }
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    }
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in SSSD. The sss_nss_protocol_fill_initgr() function in the NSS responder pre-allocates reply space for all group entries but does not shrink the packet when groups are skipped, causing uninitialized heap bytes to be transmitted to the client. A local attacker can exploit this to disclose cached directory data and heap layout information from the sssd_nss process."
    }
  ],
  "id": "CVE-2026-68744",
  "lastModified": "2026-08-31T19:17:10.443",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "secalert@redhat.com",
        "type": "Secondary"
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        "ssvcData": {
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          "options": [
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              "exploitation": "none"
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            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-04T14:19:33.655887Z",
          "version": "2.0.3"
        }
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  },
  "published": "2026-08-04T06:16:30.490",
  "references": [
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      "source": "secalert@redhat.com",
      "tags": [
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      ],
      "url": "https://access.redhat.com/security/cve/CVE-2026-68744"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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        "Vendor Advisory"
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509761"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-908"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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