Memory disclosure via unknown-type aggregate arguments
Published Dec 10, 2023 · Updated Jun 23, 2026
Information disclosure in PostgreSQL 11 through 16 allows remote authenticated users to read server memory via aggregate calls. In transformAggregateCall(), argument types are collected before DISTINCT processing coerces an untyped string to text, so the aggregate interprets the text as a zero-terminated unknown value and reads through the next zero byte. A valid database login is required, and disclosed bytes can contain confidential server-process data, although controllable placement of valuable data has not been established.
Summary
What happened
Information disclosure in PostgreSQL 11 through 16 allows remote authenticated users to read server memory via aggregate calls. In transformAggregateCall(), argument types are collected before DISTINCT processing coerces an untyped string to text, so the aggregate interprets the text as a zero-terminated unknown value and reads through the next zero byte. A valid database login is required, and disclosed bytes can contain confidential server-process data, although controllable placement of valuable data has not been established.
The record
- CVE
- CVE-2023-5868
- Published
- Dec 10, 2023
- Updated
- Jun 23, 2026
- Vendor
- Red Hat
- Product
- Red Hat Advanced Cluster Security for Kubernetes
- Classifications
- CWE-686, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 10, 2023CVE publishedPublication date reported by the CVE source.
- Jun 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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