Enclave data disclosure via unchecked buffer pointers
Published Dec 7, 2023 · Updated Jan 1, 2025
Information disclosure in Microsoft Edge before 120.0.2210.61 allows attackers to read sensitive data from a protected enclave. SealSettings and UnsealSettings in prefs_enclave_x64.dll pass caller-derived buffers to enclave sealing APIs without verifying that the pointers reference memory outside the enclave. A process outside the enclave must supply enclave-resident addresses; the demonstrated consequence is arbitrary reading and writing within enclave memory.
Summary
What happened
Information disclosure in Microsoft Edge before 120.0.2210.61 allows attackers to read sensitive data from a protected enclave. SealSettings and UnsealSettings in prefs_enclave_x64.dll pass caller-derived buffers to enclave sealing APIs without verifying that the pointers reference memory outside the enclave. A process outside the enclave must supply enclave-resident addresses; the demonstrated consequence is arbitrary reading and writing within enclave memory.
The record
- CVE
- CVE-2023-36880
- Published
- Dec 7, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Microsoft Edge (Chromium-based)
- Classifications
- T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 7, 2023CVE publishedPublication date reported by the CVE source.
- Jan 1, 2025Record 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=1.0.0 <120.0.2210.61
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.
Weakness, pattern, technique
Public exploit references
- Microsoft Edge Arbitrary Perms proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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