Apple iOS up to 9.1 iBooks xml external entity reference

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5.1$0-$5k0.00

A vulnerability was found in Apple iOS up to 9.1 (Smartphone Operating System). It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component iBooks. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality. The summary by CVE is:

iBooks in Apple iOS before 9.2 and OS X before 10.11.2 allows remote attackers to read arbitrary files via an iBooks file containing an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

The weakness was presented 12/08/2015 by Muneaki Nishimura as HT205635 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2015-7081 since 09/16/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The advisory points out:

An XML external entity reference issue existed with iBook parsing. This issue was addressed through improved parsing.

The vulnerability scanner Nessus provides a plugin with the ID 87314 (Mac OS X 10.11.x < 10.11.2 Multiple Vulnerabilities), 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 c. 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 9.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (87314). See 79541, 79545, 79546 and 79547 for similar entries.

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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
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Nessus ID: 87314
Nessus Name: Mac OS X 10.11.x < 10.11.2 Multiple Vulnerabilities
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Upgrade: iOS 9.2

Timelineinfo

09/16/2015 🔍
12/08/2015 +83 days 🔍
12/08/2015 +0 days 🔍
12/08/2015 +0 days 🔍
12/09/2015 +1 days 🔍
12/10/2015 +1 days 🔍
12/10/2015 +0 days 🔍
12/11/2015 +1 days 🔍
06/29/2022 +2392 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205635
Researcher: Muneaki Nishimura
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7081 (🔍)
SecurityTracker: 1034344
Vulnerability Center: 55048 - Apple iOS <9.2 Remote File System Read Related to an XML External Entity Issue, Medium
SecurityFocus: 78730 - Apple Mac OS X and iOS Multiple Security Vulnerabilities

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

Entryinfo

Created: 12/09/2015 14:47
Updated: 06/29/2022 21:42
Changes: 12/09/2015 14:47 (65), 05/14/2018 09:05 (12), 06/29/2022 21:29 (3), 06/29/2022 21:42 (1)
Complete: 🔍

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