Process crash via unchecked hive block length
Published May 11, 2021 · Updated Aug 3, 2024
Out-of-bounds read in libguestfs Hivex 1.3.19 and earlier allows attackers to crash a consuming process via a crafted registry hive. In lib/handle.c, hivex_open accepts a registry block whose declared length exceeds its containing page, then reads beyond the mapped data. Exploitation requires a consuming application or user to open attacker-supplied hive data; the bounded outcomes are an out-of-bounds memory read or process crash.
Summary
What happened
Out-of-bounds read in libguestfs Hivex 1.3.19 and earlier allows attackers to crash a consuming process via a crafted registry hive. In lib/handle.c, hivex_open accepts a registry block whose declared length exceeds its containing page, then reads beyond the mapped data. Exploitation requires a consuming application or user to open attacker-supplied hive data; the bounded outcomes are an out-of-bounds memory read or process crash.
The record
- CVE
- CVE-2021-3504
- Published
- May 11, 2021
- Updated
- Aug 3, 2024
- Vendor
- libguestfs
- Product
- Hivex
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 11, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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?
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- Affected versionversion=hivex-1.3.20
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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