CVE-2023-48298 : Security Advisory and Response
Learn about CVE-2023-48298, an integer underflow vulnerability in ClickHouse allowing stack overflow. Find affected versions, impact, and mitigation steps.
This article provides detailed information about CVE-2023-48298, a vulnerability related to integer underflow leading to a stack overflow in FPC codec decompression within ClickHouse.
Understanding CVE-2023-48298
This section delves into the specifics of the CVE-2023-48298 vulnerability within ClickHouse.
What is CVE-2023-48298?
ClickHouse is an open-source column-oriented database management system used for real-time analytic data reporting. The CVE-2023-48298 vulnerability involves an integer underflow issue resulting in a stack buffer overflow during the decompression of FPC codec. This vulnerability can be exploited by an unauthenticated attacker and is similar to CVE-2023-47118 in terms of exploitability.
The Impact of CVE-2023-48298
The impact of CVE-2023-48298 is significant as it could lead to a crash due to the stack buffer overflow, potentially resulting in denial of service or unauthorized access to sensitive information.
Technical Details of CVE-2023-48298
This section provides technical details about the CVE-2023-48298 vulnerability affecting ClickHouse.
Vulnerability Description
The vulnerability arises from an integer underflow issue that triggers a stack buffer overflow during FPC codec decompression, which can be exploited by attackers without authentication.
Affected Systems and Versions
ClickHouse versions up to and including 23.10.2.14 are affected by CVE-2023-48298, making them vulnerable to exploitation.
Exploitation Mechanism
The exploitation of CVE-2023-48298 involves manipulating the vulnerable function related to FPC codec decompression, leading to a stack overflow situation.
Mitigation and Prevention
As the CVE-2023-48298 vulnerability poses a security risk, appropriate mitigation and prevention measures should be taken.
Immediate Steps to Take
Immediate steps include applying patches, updates, or workarounds provided by ClickHouse to address the vulnerability and prevent exploitation.
Long-Term Security Practices
Implementing robust security practices, such as regular security audits, code reviews, and threat modeling, can help prevent similar vulnerabilities from emerging in the future.
Patching and Updates
Regularly applying security patches and updates released by ClickHouse is crucial to mitigate the risks associated with CVE-2023-48298.