Apple iOS up to 10.3.3 libexpat integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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9.4$25k-$100k0.00

Summaryinfo

A vulnerability was found in Apple iOS up to 10.3.3. It has been rated as critical. This issue affects some unknown processing of the component libexpat. This manipulation causes integer overflow. The identification of this vulnerability is CVE-2016-9063. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Apple iOS up to 10.3.3 (Smartphone Operating System) and classified as very critical. Affected by this vulnerability is an unknown function of the component libexpat. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An integer overflow during the parsing of XML using the Expat library. This vulnerability affects Firefox < 50.

The bug was discovered 11/15/2016. The weakness was shared 09/25/2017 by Abdulrahman Alqabandi (Nils) with Mozilla as HT208112 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2016-9063 since 10/27/2016. The exploitation appears to be easy. 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 $25k-$100k at the moment (estimation calculated on 01/19/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Multiple issues were addressed by updating to version 2.2.1

The vulnerability was handled as a non-public zero-day exploit for at least 22 days. During that time the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 95590 (openSUSE Security Update : Mozilla Firefox / Thunderbird and NSS (openSUSE-2016-1407)), 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 370225 (Mozilla Firefox Multiple Vulnerabilities (MFSA2016-89,MFSA2016-90)).

Upgrading to version 11 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 (95590) and SecurityFocus (BID 94337†). The entries VDB-93625, VDB-93628, VDB-93629 and VDB-93630 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Website

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: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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: 95590
Nessus Name: openSUSE Security Update : Mozilla Firefox / Thunderbird and NSS (openSUSE-2016-1407)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-HT208144
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 11

Timelineinfo

10/27/2016 🔍
11/15/2016 +19 days 🔍
11/15/2016 +0 days 🔍
12/07/2016 +22 days 🔍
09/25/2017 +292 days 🔍
09/25/2017 +0 days 🔍
10/23/2017 +28 days 🔍
06/11/2018 +231 days 🔍
01/19/2021 +953 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208112
Researcher: Abdulrahman Alqabandi (Nils)
Organization: Mozilla
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9063 (🔍)
GCVE (CVE): GCVE-0-2016-9063
GCVE (VulDB): GCVE-100-108409

OVAL: 🔍

SecurityFocus: 94337 - Mozilla Firefox Multiple Security Vulnerabilities
SecurityTracker: 1037298

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

Entryinfo

Created: 10/23/2017 11:19
Updated: 01/19/2021 15:07
Changes: 10/23/2017 11:19 (70), 11/29/2019 09:42 (19), 01/19/2021 15:07 (2)
Complete: 🔍
Cache ID: 216::103

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

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