Memory disclosure via embedded-font buffer over-read
Published Feb 17, 2023 · Updated Aug 2, 2024
Out-of-bounds read in Adobe FrameMaker 2020 Update 4 and earlier and 2022 allows attackers to disclose process memory through a crafted font. While processing an embedded font, the parser trusts crafted font data and reads beyond the end of an allocated buffer, exposing adjacent memory. Exploitation requires a victim to open a malicious file or visit a malicious page, and the disclosure can reveal data that helps bypass ASLR.
Summary
What happened
Out-of-bounds read in Adobe FrameMaker 2020 Update 4 and earlier and 2022 allows attackers to disclose process memory through a crafted font. While processing an embedded font, the parser trusts crafted font data and reads beyond the end of an allocated buffer, exposing adjacent memory. Exploitation requires a victim to open a malicious file or visit a malicious page, and the disclosure can reveal data that helps bypass ASLR.
The record
- CVE
- CVE-2023-21620
- Published
- Feb 17, 2023
- Updated
- Aug 2, 2024
- Vendor
- Adobe
- Product
- Adobe FrameMaker
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 17, 2023CVE 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <=2020u4
- Affected versionversion=unspecified <=2022
- 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
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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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