CVE-2016-4644: Infoleak
First published: Fri Jan 11 2019(Updated: )
In iOS before 9.3.3, tvOS before 9.2.2, and OS X El Capitan before v10.11.6 and Security Update 2016-004, a downgrade issue existed with HTTP authentication credentials saved in Keychain. This issue was addressed by storing the authentication types with the credentials.
Credit: product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple TV | <9.2.2 | |
| iPhone OS | <9.3.3 | |
| Apple iOS and macOS | >=10.11.0<10.11.6 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2016-4644?
The severity of CVE-2016-4644 is medium (6.5 out of 10).
What is the impact of CVE-2016-4644?
CVE-2016-4644 allows an attacker to downgrade HTTP authentication credentials saved in Keychain.
Which Apple devices are affected by CVE-2016-4644?
CVE-2016-4644 affects Apple Apple TV (up to version 9.2.2), Apple iPhone OS (up to version 9.3.3), and Apple Mac OS (up to version 10.11.6).
How can I fix CVE-2016-4644?
To fix CVE-2016-4644, update your iOS device to version 9.3.3 or later, update your Apple TV to version 9.2.2 or later, and update your Mac OS to version 10.11.6 or later.
Where can I find more information about CVE-2016-4644?
You can find more information about CVE-2016-4644 on the Apple support website: [link](https://support.apple.com/HT206902).
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