CVE-2023-48704

Unauthenticated heap buffer overflow in Gorrila codec decompression

HIGH

7.5

CVSS Score

Published: December 22, 2023 at 03:18 PM UTC

Updated: June 17, 2026 at 06:34 AM UTC

2 products affected across 1 vendorClickHouseClickhouse Cloud

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Severity

HIGH7.5

Exploit prediction

EPSS 0.5%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

ClickHouse · Clickhouse

95%

v < 23.10.5.20v < 23.3.18.15v < 23.8.8.20v < 23.9.2.47551v < 23.9.6.2023.10 ≤ v < 23.10.5.2023.3 ≤ v < 23.3.18.1523.8 ≤ v < 23.8.8.2023.9 ≤ v < 23.9.6.20

Affected range stops below 23.10.5.20, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.3.18.15, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.8.8.20, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.9.2.47551, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.9.6.20, so it looks safe — our inference, not a vendor statement

Clickhouse Cloud · Clickhouse

95%

v < 23.9.2.47551

Affected range stops below 23.9.2.47551, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatch

Source: [email protected]

https://github.com/ClickHouse/ClickHouse/pull/57107

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://github.com/ClickHouse/ClickHouse/security/advisories/GHSA-5rmf-5g48-xv63

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-120CWE-122CWE-787

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