Database exhaustion via unchecked oversized integer quoting
Published Feb 9, 2023 · Updated Mar 25, 2025
Denial of service in Active Record before 6.1.7.1 and 7.0.0 through 7.0.4 allows remote attackers to trigger slow PostgreSQL scans. The PostgreSQL adapter's _quote path accepts integers wider than signed 64-bit and emits numeric literals, forcing indexed integer comparisons into sequential scans. Reachability requires an application to pass user-controlled, out-of-range integers or floats into Active Record clauses against indexed PostgreSQL integer columns, and repeated costly scans can exhaust database capacity.
Summary
What happened
Denial of service in Active Record before 6.1.7.1 and 7.0.0 through 7.0.4 allows remote attackers to trigger slow PostgreSQL scans. The PostgreSQL adapter's _quote path accepts integers wider than signed 64-bit and emits numeric literals, forcing indexed integer comparisons into sequential scans. Reachability requires an application to pass user-controlled, out-of-range integers or floats into Active Record clauses against indexed PostgreSQL integer columns, and repeated costly scans can exhaust database capacity.
The record
- CVE
- CVE-2022-44566
- Published
- Feb 9, 2023
- Updated
- Mar 25, 2025
- Vendor
- Ruby on Rails
- Product
- Active Record
- Classifications
- CWE-400, T1499.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 9, 2023CVE publishedPublication date reported by the CVE source.
- Mar 25, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7.0.4.1, 6.1.7.1
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- PostgreSQL oversized-integer sequential-scan demonstrationproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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