Apple Safari up to 12.0.1 WebKit memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability has been found in Apple Safari up to 12.0.1 (Web Browser) and classified as critical. This vulnerability affects an unknown function 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. CVE summarizes:

A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12.1.1, tvOS 12.1.1, watchOS 5.1.2, Safari 12.0.2, iTunes 12.9.2 for Windows, iCloud for Windows 7.9.

The bug was discovered 12/05/2018. The weakness was shared 12/05/2018 by Ryan Pickren (lokihardt) with Google Project Zero as HT209344 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2018-4442 since 01/02/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/18/2020). The advisory points out:

A memory corruption issue was addressed with improved memory handling.

The vulnerability scanner Nessus provides a plugin with the ID 121206 (SUSE SLED15 / SLES15 Security Update : webkit2gtk3 (SUSE-SU-2019:0092-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371368 (Apple iTunes for Windows Prior to 12.9.2 Multiple Vulnerabilities (HT209345)).

Upgrading to version 12.0.2 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 Tenable (121206). The entries 127582, 127574, 127575 and 127577 are related to this item.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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NVD Base Score: 8.8
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 121206
Nessus Name: SUSE SLED15 / SLES15 Security Update : webkit2gtk3 (SUSE-SU-2019:0092-1)
Nessus File: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Upgrade: Safari 12.0.2

Timelineinfo

01/02/2018 🔍
12/05/2018 +337 days 🔍
12/05/2018 +0 days 🔍
12/05/2018 +0 days 🔍
12/06/2018 +1 days 🔍
01/16/2019 +41 days 🔍
01/22/2019 +6 days 🔍
04/18/2020 +452 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT209344
Researcher: Ryan Pickren (lokihardt)
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2018-4442 (🔍)
SecurityFocus: 106691 - WebKit Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/06/2018 18:30
Updated: 04/18/2020 15:36
Changes: 12/06/2018 18:30 (70), 04/18/2020 15:36 (13)
Complete: 🔍

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