Medium severity · published Jan 11, 2019
CVE-2016-4644
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…
6.5
CVSS
1.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 9.3.3 · source: NVD
MA
macOS · Apple
10.11.0 before 10.11.6 · source: NVD
AT
Apple TV · Apple
before 9.2.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-4644
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-4644
Vendor Advisory
https://support.apple.com/HT206902
Vendor Advisory
https://support.apple.com/HT206903
Vendor Advisory
https://support.apple.com/HT206905
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