Apple Safari up to 11.0 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 was found in Apple Safari up to 11.0 (Web Browser) and classified as critical. This issue affects an unknown part of the component WebKit. 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 bug was discovered 10/31/2017. The weakness was presented 10/31/2017 by Ivan Fratric with Google Project Zero as HT208223 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2017-13797 since 08/30/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The advisory points out:

Multiple memory corruption issues were addressed with improved memory handling.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 104387 (Apple TV < 11.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370627 (Apple iCloud for Windows Multiple Memory Corruption Vulnerabilities).

Upgrading to version 11.0.1 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 Tenable (104387) and Exploit-DB (43168). See 108926, 108911, 108912 and 108913 for similar entries.

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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: 7.2

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

NVD Base Score: 8.8
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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

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Nessus ID: 104387
Nessus Name: Apple TV < 11.1 Multiple Vulnerabilities
Nessus File: 🔍
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Nessus Context: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: Safari 11.0.1

Timelineinfo

08/30/2017 🔍
10/31/2017 +62 days 🔍
10/31/2017 +0 days 🔍
10/31/2017 +0 days 🔍
11/03/2017 +3 days 🔍
11/03/2017 +0 days 🔍
11/12/2017 +9 days 🔍
01/05/2023 +1880 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208223
Researcher: Ivan Fratric
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-13797 (🔍)
SecurityFocus: 101274

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

Entryinfo

Created: 11/03/2017 14:26
Updated: 01/05/2023 14:38
Changes: 11/03/2017 14:26 (74), 12/03/2019 08:27 (6), 01/21/2021 17:11 (2), 01/05/2023 14:38 (3)
Complete: 🔍

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