Apple iOS up to 9.3.2 Calendar null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Apple iOS up to 9.3.2. Affected by this vulnerability is an unknown functionality of the component Calendar. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2016-4605. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 9.3.2 (Smartphone Operating System). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component Calendar. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

Calendar in Apple iOS before 9.3.3 allows remote attackers to cause a denial of service (NULL pointer dereference and device restart) via a crafted invitation.

The weakness was presented 07/18/2016 by Henry Feldman (xisigr) with Tencent as HT206902 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2016-4605 since 05/11/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The advisory points out:

A null pointer dereference was addressed through improved memory handling.

Upgrading to version 9.3.3 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 SecurityFocus (BID 91825†). See VDB-89684, VDB-89686, VDB-89687 and VDB-89689 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: iOS 9.3.3

Timelineinfo

05/11/2016 🔍
07/18/2016 +68 days 🔍
07/18/2016 +0 days 🔍
07/18/2016 +0 days 🔍
07/19/2016 +1 days 🔍
07/21/2016 +2 days 🔍
09/05/2022 +2237 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206902
Researcher: Henry Feldman (xisigr)
Organization: Tencent
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4605 (🔍)
GCVE (CVE): GCVE-0-2016-4605
GCVE (VulDB): GCVE-100-89683
SecurityFocus: 91825 - Apple iOS APPLE-SA-2016-07-18-2 Multiple Security Vulnerabilities
SecurityTracker: 1036344

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

Entryinfo

Created: 07/19/2016 16:35
Updated: 09/05/2022 12:23
Changes: 07/19/2016 16:35 (59), 03/03/2019 09:47 (14), 09/05/2022 12:23 (3)
Complete: 🔍
Cache ID: 216::103

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