FKIE_CVE-2026-73644

Vulnerability from fkie_nvd - Published: 2026-08-13 18:18 - Updated: 2026-09-18 20:09
Severity
9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Summary
OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.2, the SASL PLAIN authorization identity path in opendj-server-legacy/src/main/java/org/opends/server/extensions/PlainSASLMechanismHandler.java checked the PROXIED_AUTH privilege but did not evaluate the mayProxy proxy ACI scope when an authzid resolved to a different user. Both dn: and u: or bare authzid forms could therefore let an authenticated account holding PROXIED_AUTH assume any resolvable non-root identity outside the identities permitted by its proxy ACI. The fix returns INVALID_CREDENTIALS (49) before password verification when the target authorization identity is not permitted. This issue is fixed in version 5.1.2.
References
security-advisories@github.comhttps://github.com/OpenIdentityPlatform/OpenDJ/commit/5c326850f1ab945cfca7ac9c5aaf77d1052c6bed
security-advisories@github.comhttps://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.2
security-advisories@github.comhttps://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-p279-2cqp-84jg
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "OpenDJ",
          "vendor": "OpenIdentityPlatform",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.1.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenDJ is an LDAPv3 compliant directory service. Prior to 5.1.2, the SASL PLAIN authorization identity path in opendj-server-legacy/src/main/java/org/opends/server/extensions/PlainSASLMechanismHandler.java checked the PROXIED_AUTH privilege but did not evaluate the mayProxy proxy ACI scope when an authzid resolved to a different user. Both dn: and u: or bare authzid forms could therefore let an authenticated account holding PROXIED_AUTH assume any resolvable non-root identity outside the identities permitted by its proxy ACI. The fix returns INVALID_CREDENTIALS (49) before password verification when the target authorization identity is not permitted. This issue is fixed in version 5.1.2."
    }
  ],
  "id": "CVE-2026-73644",
  "lastModified": "2026-09-18T20:09:01.757",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-73644",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-18T01:29:18.144094Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-13T18:18:20.093",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/OpenIdentityPlatform/OpenDJ/commit/5c326850f1ab945cfca7ac9c5aaf77d1052c6bed"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-p279-2cqp-84jg"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        },
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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