CVE-2018-5174 Detail
Current Description
In the Windows 10 April 2018 Update, Windows Defender SmartScreen honors the "SEE_MASK_FLAG_NO_UI" flag associated with downloaded files and will not show any UI. Files that are unknown and potentially dangerous will be allowed to run because SmartScreen will not prompt the user for a decision, and if the user is offline all files will be allowed to be opened because Windows won't prompt the user to ask what to do. Firefox incorrectly sets this flag when downloading files, leading to less secure behavior from SmartScreen. Note: this issue only affects Windows 10 users running the April 2018 update or later. It does not affect other Windows users or other operating systems. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
Source:
MITRE
Description Last Modified:
06/11/2018
View Analysis Description
Analysis Description
In the Windows 10 April 2018 Update, Windows Defender SmartScreen honors the "SEE_MASK_FLAG_NO_UI" flag associated with downloaded files and will not show any UI. Files that are unknown and potentially dangerous will be allowed to run because SmartScreen will not prompt the user for a decision, and if the user is offline all files will be allowed to be opened because Windows won't prompt the user to ask what to do. Firefox incorrectly sets this flag when downloading files, leading to less secure behavior from SmartScreen. Note: this issue only affects Windows 10 users running the April 2018 update or later. It does not affect other Windows users or other operating systems. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
Source:
MITRE
Description Last Modified:
06/11/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
7.5 HIGH
Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
(V3 legend)
Impact Score:
3.6
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
High
Availability (A):
None
CVSS v2.0 Severity and Metrics:
Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
Access Vector (AV):
Network
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
None
Integrity (I):
Partial
Availability (A):
None
Additional Information:
Allows unauthorized modification
References to Advisories, Solutions, and Tools
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Change History
2 change records found
- show changes
Initial Analysis -
8/7/2018 2:04:27 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
AND
OR
*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 60.0
*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 52.8.0
*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 52.8.0
*cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:* versions up to (excluding) 52.8.0
OR
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* |
| Added |
CVSS V2 |
|
(AV:N/AC:L/Au:N/C:N/I:P/A:N) |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| Added |
CWE |
|
CWE-254 |
| Changed |
Reference Type |
http://www.securityfocus.com/bid/104136 No Types Assigned |
http://www.securityfocus.com/bid/104136 Third Party Advisory, VDB Entry |
| Changed |
Reference Type |
http://www.securitytracker.com/id/1040896 No Types Assigned |
http://www.securitytracker.com/id/1040896 Third Party Advisory, VDB Entry |
| Changed |
Reference Type |
https://bugzilla.mozilla.org/show_bug.cgi?id=1447080 No Types Assigned |
https://bugzilla.mozilla.org/show_bug.cgi?id=1447080 Issue Tracking, Permissions Required, Third Party Advisory |
| Changed |
Reference Type |
https://www.mozilla.org/security/advisories/mfsa2018-11/ No Types Assigned |
https://www.mozilla.org/security/advisories/mfsa2018-11/ Vendor Advisory |
| Changed |
Reference Type |
https://www.mozilla.org/security/advisories/mfsa2018-12/ No Types Assigned |
https://www.mozilla.org/security/advisories/mfsa2018-12/ Vendor Advisory |
| Changed |
Reference Type |
https://www.mozilla.org/security/advisories/mfsa2018-13/ No Types Assigned |
https://www.mozilla.org/security/advisories/mfsa2018-13/ Vendor Advisory |
CVE Modified by MITRE -
6/12/2018 9:29:22 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securityfocus.com/bid/104136 [No Types Assigned] |
| Added |
Reference |
|
http://www.securitytracker.com/id/1040896 [No Types Assigned] |
Quick Info
CVE Dictionary Entry:
CVE-2018-5174
NVD Published Date:
06/11/2018
NVD Last Modified:
08/07/2018
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