What is CVE-2024-6873?

CVE-2024-6873 is a high-severity vulnerability in Clickhouse, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2024-08-01.

How severe is CVE-2024-6873?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2024-6873 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Clickhouse

CVE-2024-6873

It is possible to crash or redirect the execution flow of the ClickHouse server process from an unauthenticated vector by sending a specially crafted request to the ClickHouse server native interface. This redirection is limited to what is available within a 256-byte range of memory at the time of execution, and no known remote code execution (RCE) code has been produced or exploited. Fixes have been merged to all currently supported version of ClickHouse. If you are maintaining your own forked version of ClickHouse or using an older version and cannot upgrade, the fix for this vulnerability can be found in this commit https://github.com/ClickHouse/ClickHouse/pull/64024 .

Vulnerability class: Buffer Overflow

EPSS: 0.007 (50.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H.

Affected products

Clickhouse — versions v23.8.0, v24.3.0, v24.4.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

Public proof-of-concept exploits

References

cb7ba516-3b07-4c98-b0c2-715220f1a8f6

Frequently asked questions

What is CVE-2024-6873?: CVE-2024-6873 is a high-severity vulnerability in Clickhouse, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2024-08-01.
How severe is CVE-2024-6873?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2024-6873 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.