Service interruption via oversized dynamic class names
Published Jun 23, 2021 · Updated Aug 3, 2024
Uncontrolled resource consumption in Dion Mendel BinData before 2.4.10 allows attackers to interrupt services through crafted class names. Dynamic Bit and Integer class creation eagerly computes enormous numeric bounds from an unbounded bit count while generating clamp code, consuming excessive CPU. Exploitation requires an application to pass attacker-controlled input to constantize so that it resolves a BinData::Bit or Integer class; the computation can stall the hosting process.
Summary
What happened
Uncontrolled resource consumption in Dion Mendel BinData before 2.4.10 allows attackers to interrupt services through crafted class names. Dynamic Bit and Integer class creation eagerly computes enormous numeric bounds from an unbounded bit count while generating clamp code, consuming excessive CPU. Exploitation requires an application to pass attacker-controlled input to constantize so that it resolves a BinData::Bit or Integer class; the computation can stall the hosting process.
The record
- CVE
- CVE-2021-32823
- Published
- Jun 23, 2021
- Updated
- Aug 3, 2024
- Vendor
- Dion Mendel
- Product
- BinData
- Classifications
- CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 23, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record 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=< 2.4.10
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
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Technologies
Your stack
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Your stack
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