Apple iOS up to 10.3.1 WebKit memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.2$5k-$25k0.00

Summaryinfo

A vulnerability was found in Apple iOS up to 10.3.1. It has been rated as critical. The affected element is an unknown function of the component WebKit. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2017-2539. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple iOS up to 10.3.1 (Smartphone Operating System). It has been classified as critical. This affects an unknown function of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 05/10/2017. The weakness was presented 05/15/2017 by Richard Zhu (lokihardt) with Zero Day Initiative as HT207798 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2017-2539 since 12/01/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/23/2020). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Multiple memory corruption issues were addressed with improved memory handling.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 100826 (Fedora 24 : webkitgtk4 (2017-d39099ea6a)), 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 371242 (Apple Safari 10.1.1 Not Installed (APPLE-SA-2017-05-15-7)).

Upgrading to version 10.3.2 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 (100826) and SecurityFocus (BID 98474†). See VDB-101294, VDB-101254, VDB-101255 and VDB-101256 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

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: 100826
Nessus Name: Fedora 24 : webkitgtk4 (2017-d39099ea6a)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802925
OpenVAS Name: Apple Safari Multiple Vulnerabilities-HT207804
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 10.3.2

Timelineinfo

12/01/2016 🔍
05/10/2017 +160 days 🔍
05/15/2017 +5 days 🔍
05/15/2017 +0 days 🔍
05/15/2017 +0 days 🔍
05/16/2017 +1 days 🔍
05/22/2017 +5 days 🔍
06/16/2017 +25 days 🔍
12/23/2020 +1286 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207798
Researcher: Richard Zhu (lokihardt)
Organization: Zero Day Initiative
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2539 (🔍)
GCVE (CVE): GCVE-0-2017-2539
GCVE (VulDB): GCVE-100-101283
SecurityFocus: 98474 - Apple iOS and Safari Multiple Security Vulnerabilities
OSVDB: - CVE-2017-2539 - Apple - Multiple Products - Memory Corruption Issue
SecurityTracker: 1038487

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

Entryinfo

Created: 05/16/2017 04:22
Updated: 12/23/2020 17:34
Changes: 05/16/2017 04:22 (80), 09/27/2020 09:41 (8), 12/23/2020 17:34 (3)
Complete: 🔍
Cache ID: 216::103

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