CVE-2023-48298

Integer underflow leading to stack overflow in FPC codec decompression

HIGH
7.5
CVSS Score
Published: December 21, 2023 at 11:07 PM UTC
Updated: June 17, 2026 at 06:33 AM UTC
2 products affected across 1 vendorClickHouseClickhouse Cloud

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time. This vulnerability is an integer underflow resulting in crash due to stack buffer overflow in decompression of FPC codec. It can be triggered and exploited by an unauthenticated attacker. The vulnerability is very similar to CVE-2023-47118 with how the vulnerable function can be exploited.

Affected

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

v ≤ 23.10.2.1423.10 ≤ v ≤ 23.10.4.2523.3 ≤ v ≤ 23.3.17.1323.8 ≤ v ≤ 23.8.7.2423.9 ≤ v ≤ 23.9.5.29
23.9 ≤ v ≤ 23.9.2.47475

Remediation

No guide yet

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-191

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