Apple iOS up to 9.2 libxml2 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.6$5k-$25k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apple iOS up to 9.2. The affected element is an unknown function of the component libxml2. This manipulation causes memory corruption. This vulnerability is registered as CVE-2016-1761. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Apple iOS up to 9.2 (Smartphone Operating System). Affected by this vulnerability is an unknown code of the component libxml2. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

libxml2 in Apple iOS before 9.3, OS X before 10.11.4, and watchOS before 2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.

The weakness was published 03/21/2016 with Zero Day Initiative (ZDI) as HT206166 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2016-1761 since 01/13/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/11/2024). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Multiple memory corruption issues were addressed through improved memory handling.

The vulnerability scanner Nessus provides a plugin with the ID 90097 (Mac OS X 10.9.5 / 10.10.5 Multiple Vulnerabilities (Security Update 2016-002)), 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 124842 (Apple Mac OS X v10.11.4 and Security Update 2016-002 Not Installed (APPLE-SA-2016-03-21-5)).

Upgrading to version 9.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 24267.

The vulnerability is also documented in the databases at Tenable (90097), SecurityFocus (BID 71820†) and Vulnerability Center (SBV-57588†). Similar entries are available at VDB-68484, VDB-73556, VDB-81414 and VDB-81421. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 90097
Nessus Name: Mac OS X 10.9.5 / 10.10.5 Multiple Vulnerabilities (Security Update 2016-002)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-02 March-2016
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: iOS 9.3
TippingPoint: 🔍

Timelineinfo

01/13/2016 🔍
03/21/2016 +68 days 🔍
03/21/2016 +0 days 🔍
03/21/2016 +0 days 🔍
03/22/2016 +1 days 🔍
03/22/2016 +0 days 🔍
03/22/2016 +0 days 🔍
03/23/2016 +0 days 🔍
11/11/2024 +3155 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206166
Organization: Zero Day Initiative (ZDI)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1761 (🔍)
GCVE (CVE): GCVE-0-2016-1761
GCVE (VulDB): GCVE-100-81505
SecurityFocus: 71820
SecurityTracker: 1035353
Vulnerability Center: 57588 - Apple iOS <9.3 Remote Unspecified Vulnerability in libxml2 - CVE-2016-1761, Medium

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 03/23/2016 12:44
Updated: 11/11/2024 22:12
Changes: 03/23/2016 12:44 (59), 02/02/2019 11:10 (18), 07/11/2022 12:48 (2), 07/11/2022 12:56 (10), 11/11/2024 22:12 (16)
Complete: 🔍
Cache ID: 216::103

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

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