Process-memory disclosure via uninitialized PDF parser variable
Published May 3, 2024 · Updated Aug 2, 2024
Uninitialized memory use in PDF-XChange Editor 9.4.362.0 and 10.0.1.371 allows remote attackers to disclose process memory via a crafted PDF. The PDF parser accesses memory through a variable that was not initialized before use, causing prior process contents to be exposed during parsing. Exploitation requires the target to visit a malicious page or open a malicious file; the demonstrated result is disclosure, while code execution requires chaining with another flaw.
Summary
What happened
Uninitialized memory use in PDF-XChange Editor 9.4.362.0 and 10.0.1.371 allows remote attackers to disclose process memory via a crafted PDF. The PDF parser accesses memory through a variable that was not initialized before use, causing prior process contents to be exposed during parsing. Exploitation requires the target to visit a malicious page or open a malicious file; the demonstrated result is disclosure, while code execution requires chaining with another flaw.
The record
- CVE
- CVE-2023-39484
- Published
- May 3, 2024
- Updated
- Aug 2, 2024
- Vendor
- Tracker Software Products
- Product
- PDF-Tools
- Classifications
- CWE-908, CWE-457, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 3, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 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=10.0.1.371
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
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
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Technologies
Your stack
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Your stack
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