Apple iOS up to 9.3.1 libxml2 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.1$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Apple iOS up to 9.3.1. The impacted element is an unknown function of the component libxml2. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2016-1833. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple iOS up to 9.3.1 (Smartphone Operating System) and classified as very critical. Affected by this issue is an unknown code block 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 weakness was disclosed 05/16/2016 by Mateusz Jurczyk (Basti) with Nanyang Technological University as HT206568 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2016-1833 since 01/13/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/21/2022). 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 91447 (Debian DSA-3593-1 : libxml2 - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168916 (OpenSuSE Security Update for libxml2 (openSUSE-SU-2016:1594-1)).

Upgrading to version 9.3.2 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 (91447) and SecurityFocus (BID 90691†). The entries VDB-87415, VDB-87444, VDB-87451 and VDB-87453 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.1

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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: 91447
Nessus Name: Debian DSA-3593-1 : libxml2 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 11066
OpenVAS Name: SuSE Update for libxml2 openSUSE-SU-2016:1594-1 (libxml2)
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 9.3.2
Patch: git.gnome.org

Timelineinfo

01/13/2016 🔍
05/16/2016 +124 days 🔍
05/16/2016 +0 days 🔍
05/16/2016 +0 days 🔍
05/18/2016 +2 days 🔍
05/20/2016 +2 days 🔍
06/03/2016 +14 days 🔍
08/21/2022 +2270 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206568
Researcher: Mateusz Jurczyk (Basti)
Organization: Nanyang Technological University
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1833 (🔍)
GCVE (CVE): GCVE-0-2016-1833
GCVE (VulDB): GCVE-100-87512

OVAL: 🔍

SecurityFocus: 90691 - Apple Mac OS X/watchOS/iOS/tvOS Multiple Security Vulnerabilities
SecurityTracker: 1035890

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

Entryinfo

Created: 05/18/2016 12:19
Updated: 08/21/2022 09:28
Changes: 05/18/2016 12:19 (72), 12/01/2018 23:53 (14), 08/21/2022 09:28 (5)
Complete: 🔍
Cache ID: 216::103

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