CVE-2017-9803 — HIGH (7.5) — White Hats Nepal

Vulnerability Description

Apache Solr's Kerberos plugin can be configured to use delegation tokens, which allows an application to reuse the authentication of an end-user or another application. There are two issues with this functionality (when using SecurityAwareZkACLProvider type of ACL provider e.g. SaslZkACLProvider). Firstly, access to the security configuration can be leaked to users other than the solr super user. Secondly, malicious users can exploit this leaked configuration for privilege escalation to further expose/modify private data and/or disrupt operations in the Solr cluster. The vulnerability is fixed from Apache Solr 6.6.1 onwards.

CVSS Score

7.5

HIGH

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apache	Solr	6.2.0

Related Weaknesses (CWE)

CWE-287

References

http://mail-archives.us.apache.org/mod_mbox/www-announce/201709.mbox/%3CCAOOKt53
http://www.securityfocus.com/bid/100870Third Party AdvisoryVDB Entry
http://mail-archives.us.apache.org/mod_mbox/www-announce/201709.mbox/%3CCAOOKt53
http://www.securityfocus.com/bid/100870Third Party AdvisoryVDB Entry

FAQ

What is CVE-2017-9803?

CVE-2017-9803 is a vulnerability with a CVSS score of 7.5 (HIGH). Apache Solr's Kerberos plugin can be configured to use delegation tokens, which allows an application to reuse the authentication of an end-user or another application. There are two issues with this ...

How severe is CVE-2017-9803?

CVE-2017-9803 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-9803?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Solr.