Apple Mac OS X up to 10.11.5 LibreSSL resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apple Mac OS X up to 10.11.5. This affects an unknown part of the component LibreSSL. Performing a manipulation results in resource management. This vulnerability is identified as CVE-2016-2109. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Apple Mac OS X up to 10.11.5 (Operating System). This affects an unknown code 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 confidentiality, integrity, and availability. The summary by CVE is:

The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in the ASN.1 BIO implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h allows remote attackers to cause a denial of service (memory consumption) via a short invalid encoding.

The weakness was released 07/18/2016 by Brian Carpenter with Oracle as HT206903 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2016-2109 since 01/29/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

Multiple issues existed in LibreSSL before 2.2.7. These were addressed by updating LibreSSL to version 2.2.7.

The vulnerability scanner Nessus provides a plugin with the ID 91282 (SUSE SLES10 Security Update : openssl (SUSE-SU-2016:1360-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196457 (Ubuntu Security Notification for Openssl Vulnerabilities (USN-2959-1)).

Upgrading to version 10.11.6 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 (91282) and SecurityFocus (BID 91787†). Entries connected to this vulnerability are available at VDB-76354, VDB-78584, VDB-78603 and VDB-78601. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Support

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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: 91282
Nessus Name: SUSE SLES10 Security Update : openssl (SUSE-SU-2016:1360-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-695
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 10.11.6
Patch: c62981390d6cf9e3d612c489b8b77c2913b25807

Timelineinfo

01/29/2016 🔍
05/04/2016 +96 days 🔍
05/20/2016 +16 days 🔍
07/15/2016 +56 days 🔍
07/18/2016 +3 days 🔍
07/18/2016 +0 days 🔍
07/19/2016 +1 days 🔍
09/06/2022 +2240 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206903
Researcher: Brian Carpenter
Organization: Oracle
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2109 (🔍)
GCVE (CVE): GCVE-0-2016-2109
GCVE (VulDB): GCVE-100-89751

OVAL: 🔍

SecurityFocus: 91787 - Oracle July 2016 Critical Patch Update Multiple Vulnerabilities
SecurityTracker: 1035721

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

Entryinfo

Created: 07/19/2016 19:24
Updated: 09/06/2022 08:58
Changes: 07/19/2016 19:24 (59), 03/03/2019 13:00 (26), 09/06/2022 08:58 (6)
Complete: 🔍
Cache ID: 216:A44:103

Be aware that VulDB is the high quality source for vulnerability data.

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