Information disclosure via freed object access
Published Feb 11, 2021 · Updated Sep 16, 2024
Use-after-free in Adobe Acrobat Reader allows remote attackers to disclose sensitive information via a crafted PDF opened by a victim. The PDF setAction handler accesses an object after it has been freed while parsing crafted action data. Exploitation requires an unauthenticated attacker to deliver the file and a user to open it; the reported consequence is information disclosure in that user's context, not code execution.
Summary
What happened
Use-after-free in Adobe Acrobat Reader allows remote attackers to disclose sensitive information via a crafted PDF opened by a victim. The PDF setAction handler accesses an object after it has been freed while parsing crafted action data. Exploitation requires an unauthenticated attacker to deliver the file and a user to open it; the reported consequence is information disclosure in that user's context, not code execution.
The record
- CVE
- CVE-2021-21061
- Published
- Feb 11, 2021
- Updated
- Sep 16, 2024
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-416, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2021CVE 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <=2017.011.30188
- Affected versionversion=unspecified <=2020.001.30018
- Affected versionversion=unspecified <=2020.013.20074
- Affected versionversion=unspecified <=None
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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