Apple Mac OS X up to 10.8 Kernel Random Number Generator cryptographic issue

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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple Mac OS X up to 10.8. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Kernel Random Number Generator. Executing a manipulation can lead to cryptographic issue. This vulnerability is tracked as CVE-2013-5173. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apple Mac OS X up to 10.8 (Operating System) and classified as critical. This vulnerability affects some unknown processing of the component Kernel Random Number Generator. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect availability. CVE summarizes:

The random-number generator in the kernel in Apple Mac OS X before 10.9 provides lengthy exclusive access for processing of large requests, which allows local users to cause a denial of service (temporary generator outage) via an application that requires many random numbers.

The weakness was disclosed 10/22/2013 by Jaakko Pero with Aalto University as APPLE-SA-2013-10-22-3 as confirmed mailinglist post (Apple Security Mailinglist). The advisory is shared for download at lists.apple.com. The mailinglist post contains:

The kernel random number generator would hold a lock while satisfying a request from userspace, allowing a local user to make a large request and hold the lock for long periods of time, denying service to other users of the random number generator. This issue was addressed by releasing and reacquiring the lock for large requests more frequently.
This vulnerability was named CVE-2013-5173 since 08/15/2013. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 70561 (Mac OS X 10.x < 10.9 Multiple Vulnerabilities (BEAST)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks.

Upgrading to version 10.9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (88231), Tenable (70561), SecurityFocus (BID 63321†) and Vulnerability Center (SBV-44298†). The entries VDB-10327, VDB-10946, VDB-10932 and VDB-10931 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70561
Nessus Name: Mac OS X 10.x < 10.9 Multiple Vulnerabilities (BEAST)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: Mac OS X 10.9

Timelineinfo

08/15/2013 🔍
10/22/2013 +68 days 🔍
10/22/2013 +0 days 🔍
10/22/2013 +0 days 🔍
10/22/2013 +0 days 🔍
10/23/2013 +1 days 🔍
10/23/2013 +0 days 🔍
04/29/2014 +188 days 🔍
05/31/2021 +2589 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: APPLE-SA-2013-10-22-3
Researcher: Jaakko Pero
Organization: Aalto University
Status: Confirmed

CVE: CVE-2013-5173 (🔍)
GCVE (CVE): GCVE-0-2013-5173
GCVE (VulDB): GCVE-100-10912
X-Force: 88231
SecurityFocus: 63321 - Apple Mac OS X Kernel Random Number Generator Local Denial of Service Vulnerability
Vulnerability Center: 44298 - Apple Mac OS X <10.9 Local DoS Vulnerability due to Improper Processing of Large Requests, Low

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 10/23/2013 17:41
Updated: 05/31/2021 16:42
Changes: 10/23/2013 17:41 (70), 05/26/2017 13:45 (2), 05/31/2021 16:42 (3)
Complete: 🔍
Cache ID: 216::103

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