CVE-2019-10192 : Vulnerability Insights and Analysis

A vulnerability involving a heap-buffer overflow has been discovered in the Redis hyperloglog data structure versions 3.x prior to 3.2.13, 4.x prior to 4.0.14, and 5.x prior to 5.0.4. This vulnerability allows an attacker to manipulate the SETRANGE command to corrupt a hyperloglog and exploit the Redis interpretation of dense HLL encoding, potentially causing the writing of up to 3 additional bytes beyond the allocated buffer.

Understanding CVE-2019-10192

This CVE involves a heap-buffer overflow vulnerability in Redis versions 3.x, 4.x, and 5.x, allowing attackers to corrupt data structures and potentially execute malicious code.

What is CVE-2019-10192?

CVE-2019-10192 is a security vulnerability in Redis that enables attackers to exploit a heap-buffer overflow in the hyperloglog data structure, affecting specific versions of Redis.

The Impact of CVE-2019-10192

The vulnerability poses a high risk with a CVSS base score of 7.2, potentially leading to data corruption, unauthorized access, and system compromise.

Technical Details of CVE-2019-10192

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows attackers to corrupt hyperloglog data structures by manipulating the SETRANGE command, leading to potential buffer overflow and code execution.

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 the vulnerability by carefully corrupting hyperloglog using the SETRANGE command to trick Redis into writing beyond the allocated buffer, potentially executing malicious code.

Mitigation and Prevention

Protecting systems from CVE-2019-10192 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 for any unusual activities on Redis instances.

Long-Term Security Practices

Regularly update Redis and other software to patch known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.
Conduct regular security assessments and audits to identify and address security gaps.
Educate users and administrators about secure coding practices and the importance of timely updates.

Patching and Updates

Apply the latest security patches provided by Redis Labs to address the vulnerability and enhance system security.