Memory disclosure via mis-sized font variation read
Published Dec 10, 2024 · Updated Dec 11, 2024
Out-of-bounds reading in Adobe Acrobat Reader 24.005.20307 and earlier allows attackers to disclose memory through a crafted PDF. The gvar font-table parser advances past private-point-number data but passes the full tuple variation size, rather than the remaining size, to the next read. Exploitation requires a user to open a PDF containing the crafted font; the resulting disclosure exposes process memory and aids ASLR bypass.
Summary
What happened
Out-of-bounds reading in Adobe Acrobat Reader 24.005.20307 and earlier allows attackers to disclose memory through a crafted PDF. The gvar font-table parser advances past private-point-number data but passes the full tuple variation size, rather than the remaining size, to the next read. Exploitation requires a user to open a PDF containing the crafted font; the resulting disclosure exposes process memory and aids ASLR bypass.
The record
- CVE
- CVE-2024-49532
- Published
- Dec 10, 2024
- Updated
- Dec 11, 2024
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 10, 2024CVE publishedPublication date reported by the CVE source.
- Dec 11, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=20.005.30710
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.
Public exploit references
- TALOS-2024-2064 crafted gvar font proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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