Vulnerabilities in pkg:maven/org.openidentityplatform.opendj/opendj-server-legacy

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p279-2cqp-84jg",
  "modified" : "2026-08-13T17:52:54Z",
  "published" : "2026-07-24T21:46:39Z",
  "aliases" : [ "CVE-2026-73644" ],
  "summary" : "OpenDJ SASL PLAIN authzid bypassing the proxy ACI scope check",
  "details" : "### Summary\nWhen a SASL PLAIN bind supplies an authorization identity (authzid) that resolves to a **different** user, PlainSASLMechanismHandler verified only the PROXIED_AUTH privilege and never evaluated the \"proxy\" access-control right (the mayProxy ACI scope check). As a result, any account holding the proxied-auth privilege could assume **any resolvable non-root identity** without being granted a proxy ACI for that target.\n\nThis diverges from every other proxy path in OpenDJ — the proxied-authorization controls (RFC 4370) and the DIGEST-MD5 / GSSAPI authzid handlers all require **both** the privilege **and** the mayProxy scope grant.\n\n### Impact\nPrivilege escalation / authorization bypass: a holder of proxied-auth can act as arbitrary directory users beyond the scope intended by the deployment's proxy ACIs, defeating the ACI-based restriction on *which* identities may be impersonated. Root/Directory Manager is not assumable this way.\n\n### Fix\nEnforce the mayProxy scope check on the SASL PLAIN authzid path (both dn: and u:/bare forms), sharing one hasProxyAccess helper with the DIGEST-MD5/GSSAPI path. Denial returns INVALID_CREDENTIALS (49) **before** password verification — matching DIGEST-MD5/GSSAPI — so an unauthenticated client cannot distinguish a missing privilege from a missing ACI grant.\n\n### Workaround\nRestrict or revoke the proxied-auth privilege until upgraded.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.openidentityplatform.opendj:opendj-server-legacy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.1.2"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.1.1"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OpenIdentityPlatform/OpenDJ/security/advisories/GHSA-p279-2cqp-84jg"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OpenIdentityPlatform/OpenDJ/commit/5c326850f1ab945cfca7ac9c5aaf77d1052c6bed"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OpenIdentityPlatform/OpenDJ"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OpenIdentityPlatform/OpenDJ/releases/tag/5.1.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-639" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-24T21:46:39Z",
    "nvd_published_at" : null
  }
}