CVE-2016-0818 Information

Description

The caching functionality in the TrustManagerImpl class in TrustManagerImpl.java in Conscrypt in Android 4.x before 4.4.4 5.x before 5.1.1 LMY49H and 6.x before 2016-03-01 mishandles the distinction between an intermediate CA and a trusted root CA which allows man-in-the-middle attackers to spoof servers by leveraging access to an intermediate CA to issue a certificate aka internal bug 26232830.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://source.android.com/security/bulletin/2016-03-01.html http://www.securityfocus.com/bid/84245 https://android.googlesource.com/platform/external/conscrypt/+/4c9f9c2201116acf790fca25af43995d29980ee0 https://android.googlesource.com/platform/external/conscrypt/+/c4ab1b959280413fb11bf4fd7f6b4c2ba38bd779

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.9