Apple Safari up to 11.0 WebKit use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability was found in Apple Safari up to 11.0 (Web Browser). It has been classified as critical. Affected is an unknown code of the component WebKit. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 04/24/2018. The weakness was published 04/24/2018 by Ivan Fratric with Google Project Zero as HT208741 as confirmed security update (Website). The advisory is shared for download at support.apple.com. The public release has been coordinated with the vendor. This vulnerability is traded as CVE-2018-4200 since 01/02/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 109824 (Fedora 27 : webkitgtk4 (2018-93ba62d099)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371357 (Apple Safari Multiple Vulnerabilities (HT208741)).

Upgrading to version 11.1 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 Exploit-DB (44566), Tenable (109824), SecurityFocus (BID 103961†) and SecurityTracker (ID 1040743†). Similar entries are available at VDB-117241, VDB-118688, VDB-118690 and VDB-118704.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 109824
Nessus Name: Fedora 27 : webkitgtk4 (2018-93ba62d099)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 58847
OpenVAS Name: Apple Safari Security Updates(HT208741)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Safari 11.1

Timelineinfo

01/02/2018 🔍
04/24/2018 +112 days 🔍
04/24/2018 +0 days 🔍
04/24/2018 +0 days 🔍
04/24/2018 +0 days 🔍
05/01/2018 +7 days 🔍
05/16/2018 +15 days 🔍
06/08/2018 +23 days 🔍
03/08/2023 +1734 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208741
Researcher: Ivan Fratric
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-4200 (🔍)
SecurityFocus: 103961
SecurityTracker: 1040743

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 05/01/2018 12:23 PM
Updated: 03/08/2023 10:22 AM
Changes: 05/01/2018 12:23 PM (69), 02/01/2020 03:42 PM (19), 03/08/2023 10:22 AM (4)
Complete: 🔍
Cache ID: 18:133:40

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