What is the severity of CVE-2016-4745?

CVE-2016-4745 has been assigned a medium severity rating due to potential account enumeration risks.

How do I fix CVE-2016-4745?

To mitigate CVE-2016-4745, users should upgrade to macOS version 10.12 or later.

What type of attack does CVE-2016-4745 expose systems to?

CVE-2016-4745 exposes systems to timing side-channel attacks that can lead to user account enumeration.

Which systems are affected by CVE-2016-4745?

CVE-2016-4745 affects Apple macOS versions prior to 10.12.

Who can exploit the CVE-2016-4745 vulnerability?

Remote attackers with access to the network can exploit CVE-2016-4745 to enumerate user accounts.

Vulnerability/
CVE-2016-4745

medium

5.3

CWE

200

25/9/2016

6/8/2024

CVE-2016-4745: Infoleak

First published: Sun Sep 25 2016(Updated: )

The Kerberos 5 (aka krb5) PAM module in Apple OS X before 10.12 does not use constant-time operations for determining username validity, which makes it easier for remote attackers to enumerate user accounts via a timing side-channel attack.

Credit: product-security@apple.com

Affected Software	Affected Version	How to fix
Apple iOS and macOS	<=10.11.6

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2016-4745?
CVE-2016-4745 has been assigned a medium severity rating due to potential account enumeration risks.
How do I fix CVE-2016-4745?
To mitigate CVE-2016-4745, users should upgrade to macOS version 10.12 or later.
What type of attack does CVE-2016-4745 expose systems to?
CVE-2016-4745 exposes systems to timing side-channel attacks that can lead to user account enumeration.
Which systems are affected by CVE-2016-4745?
CVE-2016-4745 affects Apple macOS versions prior to 10.12.
Who can exploit the CVE-2016-4745 vulnerability?
Remote attackers with access to the network can exploit CVE-2016-4745 to enumerate user accounts.

agent/references
agent/type
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/severity
agent/weakness
agent/author
agent/description
agent/first-publish-date
agent/event
agent/source
agent/softwarecombine
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/apple
canonical/apple ios and macos
version/apple ios and macos/10.11.6

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Frequently Asked Questions

What is the severity of CVE-2016-4745?
CVE-2016-4745 has been assigned a medium severity rating due to potential account enumeration risks.
How do I fix CVE-2016-4745?
To mitigate CVE-2016-4745, users should upgrade to macOS version 10.12 or later.
What type of attack does CVE-2016-4745 expose systems to?
CVE-2016-4745 exposes systems to timing side-channel attacks that can lead to user account enumeration.
Which systems are affected by CVE-2016-4745?
CVE-2016-4745 affects Apple macOS versions prior to 10.12.
Who can exploit the CVE-2016-4745 vulnerability?
Remote attackers with access to the network can exploit CVE-2016-4745 to enumerate user accounts.