CVE-2021-27905— SSRF vulnerability with the Replication handler
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I. Basic Information for CVE-2021-27905
Vulnerability Information
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Vulnerability Title
SSRF vulnerability with the Replication handler
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Solr 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Solr是美国阿帕奇（Apache）基金会的一款基于Lucene（一款全文搜索引擎）的搜索服务器。该产品支持层面搜索、垂直搜索、高亮显示搜索结果等。 Apache Solr 8.8.2之前版本存在代码问题漏洞，攻击者可利用masterUrl参数将索引数据复制到本地内核中。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Solr | Apache Solr ~ 8.8.2 | - |
II. Public POCs for CVE-2021-27905
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Apache Solr SSRF(CVE-2021-27905) | https://github.com/Henry4E36/Solr-SSRF | POC Details |
| 2 | CVE-2021-27905 | https://github.com/W2Ning/Solr-SSRF | POC Details |
| 3 | [CVE-2021-27905] Apache Solr ReplicationHandler Server Side Request Forgery (SSRF) | https://github.com/murataydemir/CVE-2021-27905 | POC Details |
| 4 | POC for LFI related to CVE-2021-27905 | https://github.com/pdelteil/CVE-2021-27905.POC | POC Details |
| 5 | 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. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-27905.yaml | POC Details |
| 6 | None | https://github.com/Threekiii/Awesome-POC/blob/master/%E4%B8%AD%E9%97%B4%E4%BB%B6%E6%BC%8F%E6%B4%9E/Apache%20Solr%20Replication%20handler%20SSRF%20CVE-2021-27905.md | POC Details |
| 7 | Apache Solr < 8.8.2 Server Side Request Forgery | https://github.com/RIZZZIOM/CVE-2021-27905 | POC Details |
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-27905
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- https://security.netapp.com/advisory/ntap-20210611-0009/x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-27905
Same Patch Batch · Apache Software Foundation · 2021-04-13 · 4 CVEs total
| CVE-2021-29262 | Misapplied Zookeeper ACLs can result in leakage of configured authentication and authoriza | |
| CVE-2021-29943 | Apache Solr Unprivileged users may be able to perform unauthorized read/write to collectio | |
| CVE-2021-29425 | Possible limited path traversal vulnerabily in Apache Commons IO |
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V. Comments for CVE-2021-27905
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