Vulnerability identifier: #VU12899

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-3163

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

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

Vendor: Apache Foundation

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the atrget system.

The weakness exists the Index Replication feature due to pulling index files from a master/leader node using an HTTP API which accepts a file name and improper validation of the file name. A remote attacker can submit a specially crafted special request, conduct path traversal attack, leaving any file readable to the Solr server process exposed.

Mitigation
Update to version 5.5.4 or 6.4.1.

Vulnerable software versions

Apache Solr: 5.5 - 5.5.3, 6.4, 6.3, 6.2, 6.1, 6.0 - 6.0.1

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External links
http://lists.apache.org/thread.html/a6a33a186f293f9f9aecf3bd39c76252bfc49a79de4321dd2a53b488@%3Csol...

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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.