CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.5 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in Microsoft Edge on Win10/Server 2016 (Web Browser) (version now known). Affected is some unknown processing. 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. CVE summarizes:
Microsoft Edge in Microsoft Windows 10 1607 and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way that Microsoft Edge accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8734, CVE-2017-8751, and CVE-2017-11766.
The bug was discovered 09/12/2017. The weakness was presented 09/12/2017 by Ivan Fratric with Google Project Zero as KB4038782 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability is traded as CVE-2017-8731 since 05/03/2017. 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 advisory points out:
A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that enables an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
A public exploit has been developed by Google Security Research and been published 1 weeks after the advisory. 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 $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 103128 (KB4038782: Windows 10 Version 1607 and Windows Server 2016 September 2017 Cumulative Update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91409 (Microsoft Edge Security Update for September 2017).
Applying the patch KB4038782 is able to eliminate this problem. The bugfix is ready for download at catalog.update.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at Tenable (103128) and Exploit-DB (42758). See 106500, 106501, 106506 and 106507 for similar entries.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.0VulDB Meta Temp Score: 4.8
VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 3.1
Vendor Vector (Microsoft): 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Google Security Research
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Nessus ID: 103128
Nessus Name: KB4038782: Windows 10 Version 1607 and Windows Server 2016 September 2017 Cumulative Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 802136
OpenVAS Name: Microsoft Windows Multiple Vulnerabilites (KB4038782)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍
Patch: KB4038782
Timeline
05/03/2017 🔍09/12/2017 🔍
09/12/2017 🔍
09/12/2017 🔍
09/12/2017 🔍
09/12/2017 🔍
09/12/2017 🔍
09/13/2017 🔍
09/19/2017 🔍
09/19/2017 🔍
01/12/2021 🔍
Sources
Vendor: microsoft.comAdvisory: KB4038782
Researcher: Ivan Fratric
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2017-8731 (🔍)
OVAL: 🔍
SecurityTracker: 1039326
SecurityFocus: 100735 - Microsoft Edge CVE-2017-8731 Remote Memory Corruption Vulnerability
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 09/13/2017 14:28Updated: 01/12/2021 10:29
Changes: 09/13/2017 14:28 (96), 11/19/2019 08:27 (7), 01/12/2021 10:29 (2)
Complete: 🔍
No comments yet. Languages: en.
Please log in to comment.