CVE-2020-7021 Insertion of Sensitive Information into Log File in Elasticsearch

What is CVE-2020-7021?

CVE-2020-7021 is a medium-severity vulnerability in Elastic Elasticsearch, published on 10 Feb 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Elasticsearch versions before 7.10.0 and 6.8.14 have an information disclosure issue when audit logging and the emit_request_body option is enabled. The Elasticsearch audit log could contain sensitive information such as password hashes or authentication tokens. This could allow an Elasticsearch administrator to view these details.

Weakness: CWE-532

Which versions are affected by CVE-2020-7021?

5 open source packages ship an affected version, including org.elasticsearch:elasticsearch and elasticsearch. It affects 1 product.

Products include Elastic Elasticsearch.

How do I fix CVE-2020-7021?

Upgrade org.elasticsearch:elasticsearch to a fixed version for your release line: 6.8.14 or 7.10.0.

Is CVE-2020-7021 being exploited?

There is no known exploitation of CVE-2020-7021 in the wild and no public exploit code.

Other vulnerabilities in Elastic Elasticsearch

• CVE-2015-1427 Elasticsearch Groovy Scripting Engine Remote Code Execution Exploited Critical 9.8
• CVE-2014-3120 Elasticsearch Remote Code Execution Exploited High 8.1
• CVE-2015-5377 Code injection in n/a Critical 9.8
• CVE-2026-72649 Deserialization of Untrusted Data in Elasticsearch Leading to Remote Code Execution High 8.8
• CVE-2026-72642 Use of Out-of-range Pointer Offset in the Elasticsearch Machine Learning Native Inference Process High 8.8

All Elastic Elasticsearch vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-elasticsearch-2020-7021, GHSA-cqgv-256r-m9r8, UBUNTU-CVE-2020-7021.