CVE-2019-10193 : Security Advisory and Response
Learn about CVE-2019-10193, a high-severity vulnerability in Redis hyperloglog data structure versions 3.x before 3.2.13, 4.x before 4.0.14, and 5.x before 5.0.4. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
A vulnerability has been identified in versions 3.x before 3.2.13, 4.x before 4.0.14, and 5.x before 5.0.4 of the Redis hyperloglog data structure. This vulnerability involves an overflow in a stack buffer, which can be exploited by manipulating a hyperloglog through the SETRANGE command. An attacker could potentially cause Redis to perform controlled increments slightly exceeding 12 bytes beyond the allocated buffer's limit.
Understanding CVE-2019-10193
This CVE pertains to a stack-buffer overflow vulnerability found in Redis versions 3.x before 3.2.13, 4.x before 4.0.14, and 5.x before 5.0.4.
What is CVE-2019-10193?
The vulnerability in Redis hyperloglog data structure versions allows attackers to manipulate hyperloglog through the SETRANGE command, leading to controlled increments beyond buffer limits.
The Impact of CVE-2019-10193
The vulnerability has a CVSS base score of 7.2, indicating a high severity level with significant impacts on confidentiality, integrity, and availability.
Technical Details of CVE-2019-10193
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The vulnerability involves a stack-buffer overflow in Redis hyperloglog data structure versions, enabling attackers to corrupt hyperloglog using the SETRANGE command.
Affected Systems and Versions
- Product: Redis
- Vendor: Redis Labs
- Affected Versions: 3.x before 3.2.13, 4.x before 4.0.14, 5.x before 5.0.4
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating hyperloglog through the SETRANGE command, causing controlled increments beyond the buffer's allocated limit.
Mitigation and Prevention
Protecting systems from CVE-2019-10193 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Redis to versions 3.2.13, 4.0.14, or 5.0.4 to mitigate the vulnerability.
- Monitor and restrict network access to Redis instances.
Long-Term Security Practices
- Regularly apply security patches and updates to Redis.
- Implement network segmentation to isolate Redis instances from critical systems.
Patching and Updates
- Apply the latest security patches provided by Redis Labs to address the vulnerability effectively.