CVE-2023-5868

A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling 'unknown'-type values from string literals without type designation can disclose bytes, potentially revealing notable and confidential information. This issue exists due to excessive data output in aggregate function calls, enabling remote users to read some portion of system memory.

Scoring

Severity

MEDIUM

CVSS base score

4.3

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS probability

2.79%

CWE

CWE-686

Published

2023-12-10

Last modified

2026-06-23

Affected products

• Red Hat Red Hat Advanced Cluster Security 4.2
• Red Hat Red Hat Advanced Cluster Security 4.2
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 8
• Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
• Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service
• Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions

Weakness type

• CWE-686

Related vulnerabilities

• CVE-2026-78422 — zbus_polkit: polkit authorization bypass via PID reuse due to incorrect D-Bus type for the subject UID
• CVE-2026-33783 — Junos OS Evolved: PTX Series: If SRTE tunnels provisioned via PCEP are present and specific gRPC queries are received evo-aftmand crashes
• CVE-2024-32632 — Printf arg type mismatch in ATCMD

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