Apple macOS up to 10.12.1 LibreSSL resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Apple macOS up to 10.12.1. This affects an unknown part of the component LibreSSL. The manipulation results in resource management. This vulnerability is cataloged as CVE-2016-6304. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Apple macOS up to 10.12.1 (Operating System). Affected is some unknown functionality of the component LibreSSL. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

Multiple memory leaks in t1_lib.c in OpenSSL before 1.0.1u, 1.0.2 before 1.0.2i, and 1.1.0 before 1.1.0a allow remote attackers to cause a denial of service (memory consumption) via large OCSP Status Request extensions.

The bug was discovered 09/22/2016. The weakness was shared 12/13/2016 by Karthik Bhargavan as HT207423 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2016-6304 since 07/26/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The advisory points out:

A denial of service issue in unbounded OCSP growth was addressed through improved memory handling.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 104047 (Oracle Integrated Lights Out Manager (ILOM) < 3.2.6 Multiple Vulnerabilities (uncredentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316384 (Cisco Unity Express OpenSSL Multiple Vulnerabilities (cisco-sa-20160927-openssl)).

Upgrading to version 10.12.2 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 Tenable (104047) and SecurityFocus (BID 92630†). The entries VDB-87879, VDB-88080, VDB-90396 and VDB-90937 are related to this item. Once again VulDB remains the best source for vulnerability data.

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CPE 2.3info

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104047
Nessus Name: Oracle Integrated Lights Out Manager (ILOM) < 3.2.6 Multiple Vulnerabilities (uncredentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-749
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: macOS 10.12.2
Patch: 2c0d295e26306e15a92eb23a84a1802005c1c137

Timelineinfo

07/26/2016 🔍
08/24/2016 +29 days 🔍
09/22/2016 +29 days 🔍
09/26/2016 +4 days 🔍
12/13/2016 +78 days 🔍
12/13/2016 +0 days 🔍
12/14/2016 +1 days 🔍
10/20/2017 +310 days 🔍
10/08/2022 +1814 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207423
Researcher: Karthik Bhargavan
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6304 (🔍)
GCVE (CVE): GCVE-0-2016-6304
GCVE (VulDB): GCVE-100-94404

OVAL: 🔍

SecurityFocus: 92630 - SSL/TLS Protocol CVE-2016-2183 Information Disclosure Vulnerability
SecurityTracker: 1036878

scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 12/14/2016 13:38
Updated: 10/08/2022 08:13
Changes: 12/14/2016 13:38 (62), 07/17/2019 19:02 (26), 10/08/2022 08:13 (5)
Complete: 🔍
Cache ID: 216:A19:103

Once again VulDB remains the best source for vulnerability data.

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