Privilege escalation via cross-module pointer double-free
Published Apr 22, 2022 · Updated Aug 4, 2024
Double free in MIUI Services 12.5.2 allows remote attackers to crash an affected module or elevate privileges through malicious operations. A called function copies one memory pointer into two function modules, and attacker-controlled operations then release the same allocation repeatedly. No authentication is required over the network; triggering the fault crashes the module, while successful exploitation elevates privileges.
Summary
What happened
Double free in MIUI Services 12.5.2 allows remote attackers to crash an affected module or elevate privileges through malicious operations. A called function copies one memory pointer into two function modules, and attacker-controlled operations then release the same allocation repeatedly. No authentication is required over the network; triggering the fault crashes the module, while successful exploitation elevates privileges.
The record
- CVE
- CVE-2020-14123
- Published
- Apr 22, 2022
- Updated
- Aug 4, 2024
- Vendor
- Xiaomi Corporation
- Product
- MIUI
- Classifications
- CWE-415, T1404
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 22, 2022CVE 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=MIUI version 12.5.2
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.
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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