CVE-2023-47118: Heap buffer overflow in T64 codec decompression
ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time. A heap buffer overflow issue was discovered in ClickHouse server. An attacker could send a specially crafted payload to the native interface exposed by default on port 9000/tcp, triggering a bug in the decompression logic of T64 codec that crashes the ClickHouse server process. This attack does not require authentication. Note that this exploit can also be triggered via HTTP protocol, however, the attacker will need a valid credential as the HTTP authentication take places first. This issue has been fixed in version 23.10.2.13-stable, 23.9.4.11-stable, 23.8.6.16-lts and 23.3.16.7-lts.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-47118?
CVE-2023-47118 has been classified as a high-severity vulnerability due to its potential for exploitation through a heap buffer overflow.
How do I fix CVE-2023-47118?
To fix CVE-2023-47118, users should upgrade ClickHouse to a patched version that addresses the heap buffer overflow issue.
What versions of ClickHouse are affected by CVE-2023-47118?
CVE-2023-47118 affects ClickHouse versions between 23.3.0 and 23.10.2.13, as well as certain versions of ClickHouse Cloud.
What type of vulnerability is CVE-2023-47118?
CVE-2023-47118 is a heap buffer overflow vulnerability that can be exploited through specially crafted payloads sent to the native interface.
Can CVE-2023-47118 lead to remote code execution?
Yes, due to its nature as a heap buffer overflow vulnerability, CVE-2023-47118 could potentially allow for remote code execution if exploited.