Process-memory disclosure via unchecked non-string conversion
Published Jun 17, 2022 · Updated Sep 16, 2024
Out-of-bounds read in Fast String Search 1.4.3 and earlier allows attackers to read previously allocated process memory via a non-string source. The indexOf binding calls napi_get_value_string_utf16 without checking its status, then uses the resulting source length and buffer after conversion fails. Reachability depends on a consuming Node.js application passing attacker-controlled non-string input; the observable consequence is limited to search-result-derived disclosure.
Summary
What happened
Out-of-bounds read in Fast String Search 1.4.3 and earlier allows attackers to read previously allocated process memory via a non-string source. The indexOf binding calls napi_get_value_string_utf16 without checking its status, then uses the resulting source length and buffer after conversion fails. Reachability depends on a consuming Node.js application passing attacker-controlled non-string input; the observable consequence is limited to search-result-derived disclosure.
The record
- CVE
- CVE-2022-25872
- Published
- Jun 17, 2022
- Updated
- Sep 16, 2024
- Vendor
- Magic Len
- Product
- Fast String Search
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 17, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 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 <unspecified
What conditions does exploitation require?
What is affected?
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
- Non-string source residual-memory proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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