Apple iOS up to 8.4.1 removefile memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apple iOS up to 8.4.1. This issue affects some unknown processing of the component removefile. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2015-5840. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple iOS up to 8.4.1 (Smartphone Operating System). This issue affects some unknown functionality of the component removefile. 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 summary by CVE is:

The checkint division routines in removefile in Apple iOS before 9 allow attackers to cause a denial of service (overflow fault and app crash) via crafted data.

The weakness was disclosed 09/16/2015 by Filippo Bigarella (beist) as HT205212 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2015-5840 since 08/06/2015. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/21/2024). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 86270 (Mac OS X < 10.11 Multiple Vulnerabilities (GHOST)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370192 (Apple Mac OS X v10.11 Not Installed (APPLE-SA-2015-09-30-3)).

Upgrading to version 9 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 (86270) and SecurityFocus (BID 76764†). The entries VDB-9015, VDB-68413, VDB-74127 and VDB-77828 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: 86270
Nessus Name: Mac OS X < 10.11 Multiple Vulnerabilities (GHOST)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus 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

Timelineinfo

08/06/2015 🔍
09/16/2015 +41 days 🔍
09/16/2015 +0 days 🔍
09/16/2015 +0 days 🔍
09/18/2015 +2 days 🔍
09/18/2015 +0 days 🔍
11/21/2024 +3352 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205212
Researcher: Filippo Bigarella (beist)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5840 (🔍)
GCVE (CVE): GCVE-0-2015-5840
GCVE (VulDB): GCVE-100-77807
SecurityFocus: 76764 - Apple iOS APPLE-SA-2015-09-16-1 Multiple Security Vulnerabilities
SecurityTracker: 1033609

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

Entryinfo

Created: 09/18/2015 13:09
Updated: 11/21/2024 22:23
Changes: 09/18/2015 13:09 (47), 12/25/2017 12:32 (20), 06/16/2022 09:02 (3), 06/16/2022 09:06 (1), 11/21/2024 22:23 (16)
Complete: 🔍
Cache ID: 216:5FD:103

Be aware that VulDB is the high quality source for vulnerability data.

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