Memory disclosure via out-of-bounds parser read
Published Jan 14, 2022 · Updated Sep 16, 2024
Out-of-bounds read in Adobe Acrobat Reader 21.007.20099 and earlier allows context-dependent attackers to disclose memory via a crafted file. The affected parser reads past the end of an allocated memory structure, but Adobe has not identified the file format, parser component, or malformed field that triggers the over-read. The flaw also affects 20.004.30017 and earlier and 17.011.30204 and earlier; exploitation requires a user to open the malicious file.
Summary
What happened
Out-of-bounds read in Adobe Acrobat Reader 21.007.20099 and earlier allows context-dependent attackers to disclose memory via a crafted file. The affected parser reads past the end of an allocated memory structure, but Adobe has not identified the file format, parser component, or malformed field that triggers the over-read. The flaw also affects 20.004.30017 and earlier and 17.011.30204 and earlier; exploitation requires a user to open the malicious file.
The record
- CVE
- CVE-2021-44742
- Published
- Jan 14, 2022
- Updated
- Sep 16, 2024
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 14, 2022CVE 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 <=17.011.30204
- Affected versionversion=unspecified <=20.004.30017
- Affected versionversion=unspecified <=21.007.20099
- Affected versionversion=unspecified <=None
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
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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