CVE-2020-35451 Explained : Impact and Mitigation
Learn about CVE-2020-35451 affecting Apache Oozie before 5.2.1, enabling local privilege escalation. Find mitigation steps and the importance of updating to secure versions.
Apache Oozie before version 5.2.1 is affected by a race condition in OozieSharelibCLI, allowing a malicious attacker to replace files in Oozie's sharelib during creation.
Understanding CVE-2020-35451
What is CVE-2020-35451?
There is a race condition in OozieSharelibCLI in Apache Oozie before version 5.2.1, enabling a malicious attacker to manipulate files in Oozie's sharelib during its creation.
The Impact of CVE-2020-35451
This vulnerability could lead to local privilege escalation, potentially allowing unauthorized access to sensitive information or system resources.
Technical Details of CVE-2020-35451
Vulnerability Description
The vulnerability stems from a race condition in OozieSharelibCLI, which could be exploited by an attacker to tamper with files in Oozie's sharelib during its initialization.
Affected Systems and Versions
- Product: Apache Oozie
- Vendor: Apache Software Foundation
- Versions Affected: < 5.2.1 (unspecified/custom version)
Exploitation Mechanism
The vulnerability arises due to insecure file handling in OozieSharelibCLI, allowing an attacker to replace files in Oozie's sharelib during its creation process.
Mitigation and Prevention
Immediate Steps to Take
- Validate the contents of the sharelib after uploading to detect any unauthorized modifications.
Long-Term Security Practices
- Regularly monitor and audit file integrity within Oozie's sharelib to identify any suspicious changes.
- Implement access controls and permissions to restrict unauthorized modifications.
Patching and Updates
- Upgrade Apache Oozie to version 5.2.1 or newer to mitigate the vulnerability and enhance system security.