CVE-2019-7614
race condition vulnerability in elasticsearch (Maven)
What is CVE-2019-7614 About?
This race condition flaw in Elasticsearch allows an attacker to gain unauthorized access to sensitive response headers from other users. Due to a timing vulnerability in how response headers are handled, sensitive data can be inadvertently exposed. Exploitation requires multiple users and precise timing, making it moderately complex.
Affected Software
- org.elasticsearch:elasticsearch
- >=7.0.0, <7.2.1
- <6.8.2
Technical Details
The vulnerability is a race condition affecting Elasticsearch versions before 7.2.1 and 6.8.2. On a system with multiple concurrent users submitting requests, a timing window exists during the processing and return of response headers. An attacker can exploit this window by simultaneously making requests. Due to the race condition, it's possible for the system to inadvertently return a response header intended for another user, which may contain sensitive data, to the attacker's request. This allows the attacker to gain unauthorized access to confidential information by observing response headers that are not meant for them.
What is the Impact of CVE-2019-7614?
Successful exploitation may allow attackers to gain unauthorized access to sensitive data contained in response headers, leading to information disclosure and potential further compromise of user accounts or system resources.
What is the Exploitability of CVE-2019-7614?
Exploitation of this race condition is of moderate complexity, as it requires precise timing and concurrency, typically on a system with multiple active users. No specific authentication beyond being a legitimate user is strictly required, but the ability to rapidly submit requests is crucial. This is a remote vulnerability as it involves interacting with the Elasticsearch service over the network. The primary prerequisite is a high load or concurrency on the Elasticsearch instance. The risk factors that increase exploitation likelihood include high user traffic and predictable request patterns, which can make it easier to win the race condition and capture unintended response headers.
What are the Known Public Exploits?
| PoC Author | Link | Commentary |
|---|---|---|
| No known exploits | ||
What are the Available Fixes for CVE-2019-7614?
Available Upgrade Options
- org.elasticsearch:elasticsearch
- <6.8.2 → Upgrade to 6.8.2
- org.elasticsearch:elasticsearch
- >=7.0.0, <7.2.1 → Upgrade to 7.2.1
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What are Similar Vulnerabilities to CVE-2019-7614?
Similar Vulnerabilities: CVE-2023-38545 , CVE-2022-38604 , CVE-2021-32626 , CVE-2020-12826 , CVE-2019-15846
