Buffer overflow in Clickhouse
CVE-2023-48704
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 Gorilla codec that crashes the ClickHouse server process. This attack does not require authentication. This issue has been addressed in ClickHouse Cloud version 23.9.2.47551 and ClickHouse versions 23.10.5.20, 23.3.18.15, 23.8.8.20, and 23.9.6.20.
Vulnerability class: Buffer Overflow
EPSS: 0.005 (39.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H.
Affected products
- Clickhouse — versions < 23.9.2.47551, < 23.10.5.20, < 23.3.18.15
- Clickhouse Clickhouse_cloud
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-48704?
- CVE-2023-48704 is a high-severity vulnerability in Clickhouse, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.0/10. Published 2023-12-22.
- How severe is CVE-2023-48704?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2023-48704 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.