FKIE_CVE-2026-11789

Vulnerability from fkie_nvd - Published: 2026-06-09 14:16 - Updated: 2026-07-23 08:10
Severity
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when computing salt length from a crafted password hash shorter than 16 bytes, causing a buffer over-read that crashes the LDAP server during authentication.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-11789Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2485422Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat directory_server 11.0
redhat directory_server 12.0
redhat directory_server 13.0
redhat 389_directory_server -
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": [
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          ],
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          "vendor": "Red Hat"
        },
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          "cpes": [
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          ],
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          "packageName": "redhat-ds:12/389-ds-base",
          "product": "Red Hat Directory Server 12",
          "vendor": "Red Hat"
        },
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        },
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          ],
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          "product": "Red Hat Enterprise Linux 10",
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        },
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          "cpes": [
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          ],
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          "packageName": "389-ds-base",
          "product": "Red Hat Enterprise Linux 6",
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        },
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          "cpes": [
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          "product": "Red Hat Enterprise Linux 7",
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        },
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        },
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          "packageName": "389-ds-base",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when computing salt length from a crafted password hash shorter than 16 bytes, causing a buffer over-read that crashes the LDAP server during authentication."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una vulnerabilidad en 389 Directory Server. El plugin de almacenamiento de contrase\u00f1as SMD5 realiza un subdesbordamiento de entero sin signo al calcular la longitud del salt a partir de un hash de contrase\u00f1a manipulado de menos de 16 bytes, lo que provoca una lectura excesiva del b\u00fafer que bloquea el servidor LDAP durante la autenticaci\u00f3n."
    }
  ],
  "id": "CVE-2026-11789",
  "lastModified": "2026-07-23T08:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
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            {
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          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T16:15:56.091915Z",
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  "published": "2026-06-09T14:16:37.070",
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  "vulnStatus": "Modified",
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          "value": "CWE-191"
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      ],
      "source": "secalert@redhat.com",
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}



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