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                             CERT-Renater

                  Note d'Information No. 2025/VULN052

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DATE                : 28/01/2025

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems Apache Solr versions prior to 9.8.0.

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https://lists.apache.org/thread/gl291pn8x9f9n52ys5l0pc0b6qtf0qw1
https://lists.apache.org/thread/yp39pgbv4vf1746pf5yblz84lv30vfxd
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CVE-2025-24814: Apache Solr: Core-creation with "trusted" configset
can use arbitrary untrusted files

Posted to users@solr.apache.org
Jason Gerlowski - dimanche 26 janvier 2025 12:57:25 UTC+1

Severity: moderate

Affected versions:

- Apache Solr through 9.7


Description:

Core creation allows users to replace "trusted" configset files with
arbitrary configuration

Solr instances that (1) use the "FileSystemConfigSetService" component
(the default in "standalone" or "user-managed" mode), and (2) are
running without authentication and authorization are vulnerable to a
sort of privilege escalation wherein individual "trusted" configset
files can be ignored in favor of potentially-untrusted replacements
available elsewhere on the filesystem.  These replacement config
files are treated as "trusted" and can use "<lib>" tags to add to
Solr's classpath, which an attacker might use to load malicious code
as a searchComponent or other plugin.

This issue affects all Apache Solr versions up through Solr 9.7.
Users can protect against the vulnerability by enabling
authentication and authorization on their Solr clusters or switching
to SolrCloud (and away from "FileSystemConfigSetService").  Users are
also recommended to upgrade to Solr 9.8.0, which mitigates this issue
by disabling use of "<lib>" tags by default.


Credit:

pwn null (finder)


References:

https://solr.apache.org
https://www.cve.org/CVERecord?id=CVE-2025-24814

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CVE-2024-52012: Apache Solr: Configset upload on Windows allows
arbitrary path write-access

Severity: moderate

Affected versions:

- Apache Solr 6.6 through 9.7.0


Description:

Relative Path Traversal vulnerability in Apache Solr.

Solr instances running on Windows are vulnerable to arbitrary filepath
write-access, due to a lack of input-sanitation in the "configset
upload" API.  Commonly known as a "zipslip", maliciously constructed
ZIP files can use relative filepaths to write data to unanticipated
parts of the filesystem.

This issue affects Apache Solr: from 6.6 through 9.7.0.

Users are recommended to upgrade to version 9.8.0, which fixes the issue.
Users unable to upgrade may also safely prevent the issue by using Solr's
"Rule-Based Authentication Plugin" to restrict access to the configset
upload API, so that it can only be accessed by a trusted set of
administrators/users.

This issue is being tracked as SOLR-17543


Credit:

rry (finder)

References:

https://solr.apache.org
https://www.cve.org/CVERecord?id=CVE-2024-52012
https://issues.apache.org/jira/browse/SOLR-17543


        
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