CVE-2017-0248 : Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security Usage taggings when they present a certificate that is invalid for a specific use, aka ".NET Security Feature Bypass Vulnerability."

Published 2017-05-12 14:29:04

Updated 2019-10-03 00:03:26

Source Microsoft Corporation

View at NVD, CVE.org

Products affected by CVE-2017-0248

Microsoft » .net Framework » Version: 2.0 Update SP2
cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
Matching versions
Microsoft » .net Framework » Version: 3.5
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
Matching versions
Microsoft » .net Framework » Version: 3.5.1
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
Matching versions
Microsoft » .net Framework » Version: 4.5.2
cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
Matching versions
Microsoft » .net Framework » Version: 4.6
cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
Matching versions
Microsoft » .net Framework » Version: 4.6.1
cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*
Matching versions
Microsoft » .net Framework » Version: 4.6.2
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*
Matching versions
Microsoft » .net Framework » Version: 4.7
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2017-0248

Top countries where our scanners detected CVE-2017-0248

Top open port discovered on systems with this issue 80

IPs affected by CVE-2017-0248 19,264

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2017-0248!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2017-0248

EPSS FAQ

0.37%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 72 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-0248

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:P/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: None

CWE ids for CVE-2017-0248

CWE-295 Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-0248

http://www.securityfocus.com/bid/98117

Microsoft .NET Framework CVE-2017-0248 Security Bypass Vulnerability
Third Party Advisory;VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0248

CVE-2017-0248 | .NET Security Feature Bypass Vulnerability
Patch;Vendor Advisory
http://www.securitytracker.com/id/1038458

Microsoft .NET Lets Remote Users Bypass Certificate Use Restrictions on the Target System - SecurityTracker