Local information disclosure via premature magic comparison
Published Jun 11, 2020 · Updated Aug 4, 2024
Out-of-bounds read in AVB verification in Google Cloud Android 10 allows local users with System privileges to disclose process memory. avb_vbmeta_image_verify compares the AVB magic value before confirming that the supplied vbmeta image contains a complete header, causing a truncated image to make avb_safe_memcmp read beyond the input buffer. Exploitation requires System execution privileges and no user interaction; the bounded impact is local information disclosure.
Summary
What happened
Out-of-bounds read in AVB verification in Google Cloud Android 10 allows local users with System privileges to disclose process memory. avb_vbmeta_image_verify compares the AVB magic value before confirming that the supplied vbmeta image contains a complete header, causing a truncated image to make avb_safe_memcmp read beyond the input buffer. Exploitation requires System execution privileges and no user interaction; the bounded impact is local information disclosure.
The record
- CVE
- CVE-2020-0152
- Published
- Jun 11, 2020
- Updated
- Aug 4, 2024
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Jun 11, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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=Android-10
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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