Local heap over-read in jx9MemObjStore
Published Apr 18, 2025 · Updated Apr 18, 2025
Heap buffer over-read in UnQLite at commit 957c377cb691a4f617db9aba5cc46d90425071e2 allows local users to trigger an out-of-bounds read. When the Jx9 VM processes the reproducer script, jx9MemObjStore dereferences an operand 36 bytes before its heap allocation and performs a four-byte read. Exploitation requires local execution with attacker-controlled Jx9 input; the demonstrated consequence is process termination under AddressSanitizer, while further effects remain undisclosed.
Summary
What happened
Heap buffer over-read in UnQLite at commit 957c377cb691a4f617db9aba5cc46d90425071e2 allows local users to trigger an out-of-bounds read. When the Jx9 VM processes the reproducer script, jx9MemObjStore dereferences an operand 36 bytes before its heap allocation and performs a four-byte read. Exploitation requires local execution with attacker-controlled Jx9 input; the demonstrated consequence is process termination under AddressSanitizer, while further effects remain undisclosed.
The record
- CVE
- CVE-2025-3791
- Published
- Apr 18, 2025
- Updated
- Apr 18, 2025
- Vendor
- Tokuhiro Matsuno
- Product
- UnQLite
- Classifications
- CWE-122, CWE-119
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 18, 2025CVE publishedPublication date reported by the CVE source.
- Apr 18, 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?
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- Affected versionversion=957c377cb691a4f617db9aba5cc46d90425071e2
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
- unqlite-reproduce-heap-overflow.zipproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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