CVE-2015-5851: Infoleak
First published: Fri Sep 18 2015(Updated: )
The convenience initializer in the Multipeer Connectivity component in Apple iOS before 9 does not require an encrypted session, which allows local users to obtain cleartext multipeer data via an encrypted-to-unencrypted downgrade attack.
Credit: product-security@apple.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apple iOS and macOS | <=10.10.5 | |
| iPhone OS | <=8.4.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2015-5851?
CVE-2015-5851 has been classified as a medium severity vulnerability.
How do I fix CVE-2015-5851?
To mitigate CVE-2015-5851, upgrade to a version of iOS or macOS that is 9.0 or later.
What does CVE-2015-5851 exploit in iOS and macOS?
CVE-2015-5851 exploits the lack of encryption requirement in the Multipeer Connectivity component.
Who is affected by CVE-2015-5851?
Users of iOS versions prior to 9.0 and macOS versions up to 10.10.5 are affected by CVE-2015-5851.
What is an encrypted-to-unencrypted downgrade attack in relation to CVE-2015-5851?
An encrypted-to-unencrypted downgrade attack allows local users to access cleartext multipeer data due to the vulnerability in session encryption.
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