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CVE-2024-6873Specially crafted request could caused undefined behaviour which may lead to Remote Code Execution.

Description

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 .

Timeline

  1. ID reserved

    By ClickHouse

  2. · 14 days later

    Published

  3. · 1 day later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-6873, by who scored it
Scored byCVSSScoreVector
ClickHouseCNA (assigner)3.1High8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H
NVDNVD · Deferred3.1High8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H
EPSS (exploitation in 30 days)
0.72% · top 46% of all CVEs (12 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.

Affected products

  • ClickHouse · ClickHouse

    • affected v23.8.0 – < v23.8.15.35-lts
    • affected v24.3.0 – < v24.3.4.147-lts
    • affected v24.4.0 – < v24.4.2.141-stable
    • affected v24.5.0 – < v24.5.1.1763
    • affected v24.6.0 – < v24.6.1.4423-stable

What to do

Workaround: ClickHouse recommends locking down native interface to trusted IP addresses only until the system is patched.

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .