Apple iOS up to 8.4.0 libxml2 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

A vulnerability was found in Apple iOS up to 8.4.0 (Smartphone Operating System) and classified as problematic. Affected by this issue is an unknown functionality of the component libxml2. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was disclosed 08/11/2015 as HT205030 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability is handled as CVE-2014-0191 since 12/03/2013. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Dawid Golunski and been published 3 months after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 77257 (AIX 6.1 TL 8 : libxml2 (IV62447)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169994 (SUSE Enterprise Linux Security Update for libxml2 (SUSE-SU-2017:1366-1)).

Upgrading to version 8.4.1 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (77257) and Exploit-DB (38573). The entries 13154, 68675, 77129 and 77130 are pretty similar.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Dawid Golunski
Download: 🔍

EPSS Score: 🔍
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Nessus ID: 77257
Nessus Name: AIX 6.1 TL 8 : libxml2 (IV62447)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 702978
OpenVAS Name: Debian Security Advisory DSA 2978-1 (libxml2 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Upgrade: iOS 8.4.1
Patch: git.gnome.org

Timelineinfo

12/03/2013 🔍
04/24/2014 +142 days 🔍
01/21/2015 +272 days 🔍
08/11/2015 +202 days 🔍
08/11/2015 +0 days 🔍
08/14/2015 +3 days 🔍
08/14/2015 +0 days 🔍
10/30/2015 +77 days 🔍
10/30/2015 +0 days 🔍
06/10/2022 +2415 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205030
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-0191 (🔍)
OVAL: 🔍

X-Force: 93092
SecurityTracker: 1033275 - Apple iOS Multiple Flaws Let Remote Users Execute Arbitrary Code, Obtain Potentially Sensitive Information, and Deny Service and Let Apps Gain Elevated Privileges
SecurityFocus: 67233 - Libxml2 Entity Substituton CVE-2014-0191 Denial of Service Vulnerability

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

Entryinfo

Created: 08/14/2015 12:48
Updated: 06/10/2022 04:02
Changes: 08/14/2015 12:48 (69), 10/09/2017 09:47 (14), 06/10/2022 03:48 (5), 06/10/2022 03:55 (1), 06/10/2022 04:02 (1)
Complete: 🔍

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