Apple Mac OS X up to 10.11.1 libxml2 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Apple Mac OS X up to 10.11.1. This vulnerability affects unknown code of the component libxml2. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2015-3807. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.11.1 (Operating System). It has been rated as very critical. This issue affects an unknown functionality of the component libxml2. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

libxml2 in Apple iOS before 8.4.1 and OS X before 10.10.5 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (memory corruption) via a crafted XML document.

The weakness was disclosed 12/08/2015 by Ilja van Sprundel with Nanyang Technological University as HT205637 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2015-3807 since 05/07/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/14/2024). The advisory points out:

A memory corruption issue existed in the parsing of XML files. This issue was addressed through improved memory handling.

The vulnerability scanner Nessus provides a plugin with the ID 87321 (Mac OS X Multiple Vulnerabilities (Security Updates 2015-005 / 2015-008)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124389 (Apple Mac OS X v10.11.2 and Security Update 2015-008 Not Installed (APPLE-SA-2015-12-08-3)).

Upgrading to version 10.11.2 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 (87321) and SecurityFocus (BID 76343†). The entries VDB-77102, VDB-77103, VDB-77104 and VDB-77105 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.3info

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87321
Nessus Name: Mac OS X Multiple Vulnerabilities (Security Updates 2015-005 / 2015-008)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 10.11.2

Timelineinfo

05/07/2015 🔍
08/13/2015 +98 days 🔍
08/16/2015 +3 days 🔍
12/08/2015 +114 days 🔍
12/08/2015 +0 days 🔍
12/09/2015 +1 days 🔍
12/11/2015 +2 days 🔍
11/14/2024 +3261 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205637
Researcher: Ilja van Sprundel
Organization: Nanyang Technological University
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3807 (🔍)
GCVE (CVE): GCVE-0-2015-3807
GCVE (VulDB): GCVE-100-79577
SecurityFocus: 76343 - Apple Mac OS X and iOS Multiple Security Vulnerabilities
SecurityTracker: 1033275

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

Entryinfo

Created: 12/09/2015 14:05
Updated: 11/14/2024 04:49
Changes: 12/09/2015 14:05 (42), 04/28/2018 23:59 (27), 06/29/2022 15:28 (2), 06/29/2022 15:34 (1), 11/14/2024 04:49 (22)
Complete: 🔍
Cache ID: 216:607:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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