The Assets component in Apple iOS before 10 allows man-in-the-middle attackers to block software updates via vectors related to lack of an HTTPS session for retrieving updates.
http://lists.apple.com/archives/security-announce/2016/Sep/msg00002.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
http://www.securityfocus.com/bid/92932
Source: MITRE
Published: 2016-09-18
Updated: 2017-08-13
Type: CWE-254
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.2
Severity: MEDIUM