CVE-2021-29262

Misapplied Zookeeper ACLs can result in leakage of configured authentication and authorization settings

Description

When starting Apache Solr versions prior to 8.8.2, configured with the SaslZkACLProvider or VMParamsAllAndReadonlyDigestZkACLProvider and no existing security.json znode, if the optional read-only user is configured then Solr would not treat that node as a sensitive path and would allow it to be readable. Additionally, with any ZkACLProvider, if the security.json is already present, Solr will not automatically update the ACLs.

Remediation

Workaround:

  • Manually set appropriate ACLs on /security.json znode.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 26.48% Top 5%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Solr
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread.html/r536da4c4e4e406f7843461cc754a3d0a3fe575aa576e2b71a9cd57d0%40%3Cannounce.apache.org%3E mailing list vendor advisory
https://security.netapp.com/advisory/ntap-20210604-0009/ third party advisory
https://lists.apache.org/thread.html/r51b29ff62060b67bc9999ded5e252b36b09311fe5a02d27f6de3e4d3%40%3Coak-issues.jackrabbit.apache.org%3E mailing list
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Frequently Asked Questions

What is the severity of CVE-2021-29262?
CVE-2021-29262 has been scored as a high severity vulnerability.
How to fix CVE-2021-29262?
As a workaround for remediating CVE-2021-29262: Manually set appropriate ACLs on /security.json znode.
Is CVE-2021-29262 being actively exploited in the wild?
It is possible that CVE-2021-29262 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~26% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29262?
CVE-2021-29262 affects Apache Software Foundation Apache Solr.
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