Apple iOS up to 8.4.0 Libc memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Apple iOS up to 8.4.0 and classified as critical. This vulnerability affects unknown code of the component Libc. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2015-3798. Moreover, an exploit is present. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Apple iOS up to 8.4.0 (Smartphone Operating System). This affects an unknown part of the component Libc. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 08/11/2015 by Ilja van Sprundel with Google Project Zero as HT205030 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2015-3798 since 05/07/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Google Security Research and been published 2 months after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 90315 (Apple TV < 7.2.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. The commercial vulnerability scanner Qualys is able to test this issue with plugin 123806 (Apple Mac OS X v10.10.5 and Security Update 2015-006 Not Installed (APPLE-SA-2015-08-13-2)).

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 Exploit-DB (38262), Tenable (90315), SecurityFocus (BID 76343†) and SecurityTracker (ID 1033275†). The entries VDB-77102, VDB-77103, VDB-77104 and VDB-77105 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Google Security Research
Download: 🔍

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Nessus ID: 90315
Nessus Name: Apple TV < 7.2.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus 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

Timelineinfo

05/07/2015 🔍
08/11/2015 +96 days 🔍
08/11/2015 +0 days 🔍
08/13/2015 +2 days 🔍
08/14/2015 +1 days 🔍
08/14/2015 +0 days 🔍
08/16/2015 +2 days 🔍
09/22/2015 +37 days 🔍
09/22/2015 +0 days 🔍
02/02/2025 +3421 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205030
Researcher: Ilja van Sprundel
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3798 (🔍)
GCVE (CVE): GCVE-0-2015-3798
GCVE (VulDB): GCVE-100-77157
SecurityFocus: 76343 - Apple Mac OS X and iOS Multiple Security Vulnerabilities
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

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

Entryinfo

Created: 08/14/2015 12:48
Updated: 02/02/2025 22:32
Changes: 08/14/2015 12:48 (58), 10/09/2017 09:45 (20), 06/10/2022 02:41 (3), 06/10/2022 02:49 (1), 01/01/2025 04:31 (14), 02/02/2025 22:32 (2)
Complete: 🔍
Cache ID: 216::103

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