SB2019071024 - Multiple vulnerabilities in Microsoft .NET Framework

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2019-1083)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the Microsoft Common Object Runtime Library. A remote unauthenticated attacker can send a specially crafted HTTP request to the affected .NET application and cause a denial of service condition.

2) Input validation error (CVE-ID: CVE-2019-1113)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input when the software fails to check the source markup of a file.

An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user in .NET software. Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of .NET Framework.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1083
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1113