Multiple vulnerabilities in Microsoft .NET Framework



Published: 2018-01-09
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-0786
CVE-2018-0764
CWE-ID CWE-20
CWE-611
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Microsoft .NET Framework
Server applications / Frameworks for developing and running applications

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU9899

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-0786

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to improper validation of certificates by Microsoft .NET Framework (and .NET Core) components. A remote attacker can supply an invalid certificate and disregard the Enhanced Key Usage taggings.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0 - 4.7.1


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0786

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Improper Restriction of XML External Entity Reference

EUVDB-ID: #VU9900

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-0764

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to improper processing of XML documents by .NET, and .NET core. A remote attacker can issue specially crafted requests to a .NET(or .NET core) application and cause the application to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0 - 4.7.1


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0764

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



###SIDEBAR###