Apple iOS up to 8.4.1 WebKit memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Apple iOS up to 8.4.1. This affects an unknown function of the component WebKit. Executing a manipulation can lead to memory corruption. This vulnerability is handled as CVE-2015-5821. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple iOS up to 8.4.1 (Smartphone Operating System). It has been declared as critical. This vulnerability affects an unknown code block of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 09/16/2015 by Guillaume Ross with Apple as HT205212 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2015-5821 since 08/06/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 11/22/2024). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Visiting a maliciously crafted website may lead to arbitrary code execution

The vulnerability scanner Nessus provides a plugin with the ID 86001 (Apple iTunes < 12.3 Multiple Vulnerabilities (credentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124142 (Apple Safari 9.0 Not Installed (APPLE-SA-2015-09-30-2)).

Upgrading to version 9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

These issues were addressed through improved memory handling.

The vulnerability is also documented in the databases at Tenable (86001) and SecurityFocus (BID 76766†). Entries connected to this vulnerability are available at VDB-9015, VDB-68413, VDB-77185 and VDB-77828. Once again VulDB remains the best 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: 86001
Nessus Name: Apple iTunes < 12.3 Multiple Vulnerabilities (credentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802962
OpenVAS Name: Apple iTunes Multiple Vulnerabilities Sep15 (Windows)
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 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 🔍
11/22/2024 +3353 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205212
Researcher: Guillaume Ross
Organization: Apple
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5821 (🔍)
GCVE (CVE): GCVE-0-2015-5821
GCVE (VulDB): GCVE-100-77866
SecurityFocus: 76766 - WebKit 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: 11/22/2024 21:59
Changes: 09/18/2015 13:09 (60), 12/25/2017 12:37 (12), 06/16/2022 17:35 (4), 06/16/2022 17:43 (1), 11/22/2024 21:59 (16)
Complete: 🔍
Cache ID: 216:FB7:103

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