GSD-2021-27905

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
The ReplicationHandler (normally registered at "/replication" under a Solr core) in Apache Solr has a "masterUrl" (also "leaderUrl" alias) parameter that is used to designate another ReplicationHandler on another Solr core to replicate index data into the local core. To prevent a SSRF vulnerability, Solr ought to check these parameters against a similar configuration it uses for the "shards" parameter. Prior to this bug getting fixed, it did not. This problem affects essentially all Solr versions prior to it getting fixed in 8.8.2.
Aliases
Aliases
CVE-2021-27905
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{
  "GSD": {
    "alias": "CVE-2021-27905",
    "description": "The ReplicationHandler (normally registered at \"/replication\" under a Solr core) in Apache Solr has a \"masterUrl\" (also \"leaderUrl\" alias) parameter that is used to designate another ReplicationHandler on another Solr core to replicate index data into the local core. To prevent a SSRF vulnerability, Solr ought to check these parameters against a similar configuration it uses for the \"shards\" parameter. Prior to this bug getting fixed, it did not. This problem affects essentially all Solr versions prior to it getting fixed in 8.8.2.",
    "id": "GSD-2021-27905",
    "references": [
      "https://security.archlinux.org/CVE-2021-27905"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
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      "id": "GSD-2021-27905",
      "modified": "2023-12-13T01:23:35.501181Z",
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          "lang": "eng",
          "value": "Ensure that any access to the replication handler is purely internal to Solr.  Typically, it\u0027s only accessed externally for diagnostic/informational purposes."
        }
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            "authentication": "NONE",
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            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
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          "obtainAllPrivilege": false,
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            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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      },
      "lastModifiedDate": "2021-09-16T13:19Z",
      "publishedDate": "2021-04-13T07:15Z"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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