#VU98526 Improper Authentication in Apache Solr - CVE-2024-45216

Vulnerability identifier: #VU98526

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2024-45216

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache Solr
Client/Desktop applications / Other client software

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in the PKIAuthenticationPlugin when handling URLs. A remote attacker can bypass authentication process using a fake URL ending at the end of any Solr API URL path and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Solr: 5.3 - 5.3.2, 5.4 - 5.4.1, 5.5 - 5.5.5, 6.0.0, 6.1.0 - 6.1.3, 6.2.0 - 6.2.1, 6.3.0, 6.4.0 - 6.4.2, 6.5 - 6.5.1, 6.6 - 6.6.6, 7.0.0 - 7.0.1, 7.1 - 7.1.0, 7.2 - 7.2.1, 7.3.0 - 7.3.1, 7.4.0, 7.5.0, 7.6.0, 7.7.0 - 7.7.3, 8.1.2 - 8.11.3, 8.5.0 - 8.5.2, 8.6.0 - 8.6.3, 8.7.0, 8.8.0 - 8.8.2, 8.9.0, 9.0.0, 9.1.0 - 9.1.1, 9.2.0 - 9.2.1, 9.3.0, 9.4.0 - 9.4.1, 9.5.0, 9.6.0 - 9.6.1

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External links
https://lists.apache.org/thread/tscn3mp24h1otb8t7hx7mr4fqxto9hw3
https://issues.apache.org/jira/browse/SOLR-17417

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.