CVE-2023-25155 is a medium-severity vulnerability affecting Redis, an in-memory database that persists on disk. Authenticated users issuing specially crafted `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, leading to a runtime assertion and termination of the Redis server process. This vulnerability impacts all Redis versions, necessitating prompt action from security teams.
The CVSS score of 5.5 indicates that the vulnerability poses a moderate risk to organizations. The attack vector is local with low complexity and requires low privileges. While the confidentiality and integrity impacts are rated as none, the availability impact is categorized as high, underscoring the potential for significant service disruption.
Patches have been released in Redis versions 6.0.18, 6.2.11, and 7.0.9 to address this issue. Organizations should prioritize patching immediately to mitigate the risk of server termination and ensure operational continuity.
In summary, CVE-2023-25155 represents a critical risk for Redis users. Organizations are advised to implement the latest updates to protect their systems from potential disruption.
Vulnerability Details
The official CVE description indicates that the vulnerability allows for an integer overflow when certain commands are executed by authenticated users. The CVSS score of 5.5 classifies this vulnerability as medium severity, with the following metrics:
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products include all versions of Redis prior to the patches released in 6.0.18, 6.2.11, and 7.0.9. The vulnerability is classified under CWE-190 (Integer Overflow or Wraparound).
Technical Analysis
The root cause of CVE-2023-25155 lies in the handling of commands that can exploit integer overflow. The attack vector is local, meaning that the threat actor must have local access to the Redis server. The attack complexity is low, as it does not require extensive technical skills. Furthermore, the privileges required to exploit this vulnerability are also low, allowing authenticated users to trigger the overflow.
User interaction is not required, which increases the risk of exploitation. The vulnerability impacts the availability of the Redis service significantly, as a successful attack can lead to a crash of the server process.
Risk & Impact Analysis
The real-world risk associated with CVE-2023-25155 includes potential downtime of services relying on Redis, which could lead to significant business disruptions. Given that the vulnerability can be exploited by authenticated users with minimal privileges, the blast radius could be extensive, affecting various applications that utilize Redis for data storage.
Organizations should assess the urgency of addressing this vulnerability based on their specific use cases and the criticality of their Redis deployments. The CVSS score indicates a medium urgency, and organizations should schedule remediation in their patch management cycles.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Redis prior to the patches released in versions 6.0.18, 6.2.11, and 7.0.9 are affected. Organizations should ensure they upgrade to these versions to mitigate the vulnerability.
Mitigation & Remediation
Organizations should implement the following mitigation steps to address CVE-2023-25155:
Upgrade to Redis versions 6.0.18, 6.2.11, or 7.0.9.
Monitor server logs for any abnormal behaviors that may indicate exploitation attempts.
For organizations looking to validate their security posture, implementing penetration testing can provide insights into potential vulnerabilities.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for the following indicators:
Log entries indicating abnormal command usage, particularly involving `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD`.
Behavioral anomalies in server responsiveness.
AppSecure Threat Intelligence Insight
CVE-2023-25155 highlights the ongoing need for organizations to maintain up-to-date software to mitigate potential vulnerabilities. The integer overflow issue is a reminder of how even seemingly minor bugs can have significant impacts on service availability.
Security teams should ensure regular updates and monitor for emerging threats in their technology stack. For effective vulnerability management, organizations can benefit from a comprehensive vulnerability management program that addresses both existing and emerging threats.
Moreover, understanding the implications of vulnerabilities like CVE-2023-25155 can inform future development practices. Engaging in penetration testing methodologies will also assist in identifying weaknesses before they can be exploited.
In conclusion, proactive measures and continued vigilance are key in safeguarding systems against vulnerabilities like CVE-2023-25155.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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