Traffic alteration via certificate validation failure
Published Sep 8, 2021 · Updated Aug 3, 2024
Certificate validation failure in the Apple App Store before iOS and iPadOS 14.5 allows man-in-the-middle attackers to alter traffic. Apple has not published which certificate check the App Store performs incorrectly or what crafted certificate input triggers the failure. Exploitation requires a privileged network position, and the published consequence is limited to modification of App Store network traffic.
Summary
What happened
Certificate validation failure in the Apple App Store before iOS and iPadOS 14.5 allows man-in-the-middle attackers to alter traffic. Apple has not published which certificate check the App Store performs incorrectly or what crafted certificate input triggers the failure. Exploitation requires a privileged network position, and the published consequence is limited to modification of App Store network traffic.
The record
- CVE
- CVE-2021-1837
- Published
- Sep 8, 2021
- Updated
- Aug 3, 2024
- Vendor
- Apple
- Product
- iOS and iPadOS
- Classifications
- T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 8, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <14.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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
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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