Remote code execution via overlapping string copy
Published Sep 20, 2023 · Updated Sep 25, 2024
Buffer overflow in JerryScript 3.0 allows remote attackers to execute arbitrary code through crafted JavaScript string replacement. A crafted RegExp exec result supplies replacement offsets that cause ecma_stringbuilder_append_raw to pass overlapping source and destination ranges to memcpy. No privileges or user interaction are required, and successful exploitation runs attacker-controlled code in the embedding process.
Summary
What happened
Buffer overflow in JerryScript 3.0 allows remote attackers to execute arbitrary code through crafted JavaScript string replacement. A crafted RegExp exec result supplies replacement offsets that cause ecma_stringbuilder_append_raw to pass overlapping source and destination ranges to memcpy. No privileges or user interaction are required, and successful exploitation runs attacker-controlled code in the embedding process.
The record
- CVE
- CVE-2023-36109
- Published
- Sep 20, 2023
- Updated
- Sep 25, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 20, 2023CVE publishedPublication date reported by the CVE source.
- Sep 25, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- CVE-2023-36109 proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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