Application denial of service via Format action use-after-free
Published Jan 14, 2022 · Updated Sep 16, 2024
Use-after-free in Adobe Acrobat Reader DC 21.007.20099 and earlier allows attackers to interrupt the application via malicious PDF files. The Format event action processor accesses memory after it has been freed when handling crafted document actions. Exploitation requires a victim to open the malicious file, resulting in application denial of service without reported confidentiality or integrity impact.
Summary
What happened
Use-after-free in Adobe Acrobat Reader DC 21.007.20099 and earlier allows attackers to interrupt the application via malicious PDF files. The Format event action processor accesses memory after it has been freed when handling crafted document actions. Exploitation requires a victim to open the malicious file, resulting in application denial of service without reported confidentiality or integrity impact.
The record
- CVE
- CVE-2021-44713
- Published
- Jan 14, 2022
- Updated
- Sep 16, 2024
- Vendor
- Adobe
- Product
- Adobe Acrobat Reader
- Classifications
- CWE-416, T1203
- 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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