Prototype pollution via unsafe path traversal
Published Dec 25, 2022 · Updated Aug 3, 2024
Prototype pollution in Cronvel Tree Kit before 0.7.0 allows local users to modify shared object prototypes through crafted paths. The path and dotPath setters follow the prototype accessor and function-valued path segments, then write attacker-chosen values into the reached prototype object. Exploitation requires an application to pass an untrusted path to a mutating helper; resulting property changes affect objects sharing that prototype.
Summary
What happened
Prototype pollution in Cronvel Tree Kit before 0.7.0 allows local users to modify shared object prototypes through crafted paths. The path and dotPath setters follow the prototype accessor and function-valued path segments, then write attacker-chosen values into the reached prototype object. Exploitation requires an application to pass an untrusted path to a mutating helper; resulting property changes affect objects sharing that prototype.
The record
- CVE
- CVE-2021-4278
- Published
- Dec 25, 2022
- Updated
- Aug 3, 2024
- Vendor
- Cronvel
- Product
- Tree Kit
- Classifications
- CWE-1321
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 25, 2022CVE 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?
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- Affected versionversion=0.1
- Affected versionversion=0.2
- Affected versionversion=0.3
- Affected versionversion=0.4
- Affected versionversion=0.5
- Affected versionversion=0.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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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