CVE-2016-4745 - Vulnerability Details - OpenCVE

Description

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.

Published: 2016-09-25

Score: 5.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2016-5730	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.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00407.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://www.securityfocus.com/bid/93055
http://www.securitytracker.com/id/1036858
https://support.apple.com/HT207170

History

No history.

Subscriptions

Apple Mac Os X

MITRE

Status: PUBLISHED

Assigner: apple

Published: 2016-09-25T10:00:00.000Z

Updated: 2024-08-06T00:39:26.028Z

Reserved: 2016-05-11T00:00:00.000Z

Link: CVE-2016-4745

Vulnrichment

No data.

NVD

Status : Modified

Published: 2016-09-25T10:59:44.987

Modified: 2026-05-06T22:30:45.220

Link: CVE-2016-4745

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-200

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