RHSA-2019:1259 - Security Advisory

Topic

An update for dotnet is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

.NET Core is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

A new version of .NET Core that address security vulnerabilities is now available. The updated version is .NET Core Runtime 2.1.11 and SDK 2.1.507.

Security Fix(es):

• dotnet: NuGet Tampering Vulnerability (CVE-2019-0757)
• dotnet: timeouts for regular expressions are not enforced (CVE-2019-0820)
• dotnet: infinite loop in URI.TryCreate leading to ASP.Net Core Denial of Service (CVE-2019-0980)
• dotnet: crash in IPAddress.TryCreate leading to ASP.Net Core Denial of Service (CVE-2019-0981)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• dotnet: new SocketException((int)SocketError.InvalidArgument).Message is empty (BZ#1712471)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.1 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.2 x86_64
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.4 x86_64
• Red Hat Enterprise Linux Server - TUS 8.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.1 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.0 x86_64

Fixes

• BZ - 1685475 - CVE-2019-0757 dotnet: NuGet Tampering Vulnerability
• BZ - 1696836 - Update .NET Core 2.1 to Runtime 2.1.10 and SDK 2.1.506
• BZ - 1705502 - CVE-2019-0980 dotnet: infinite loop in Uri.TryCreate leading to ASP.Net Core Denial of Service
• BZ - 1705504 - CVE-2019-0981 dotnet: crash in IPAddress.TryCreate leading to ASP.Net Core Denial of Service
• BZ - 1705506 - CVE-2019-0820 dotnet: timeouts for regular expressions are not enforced
• BZ - 1710068 - Update .NET Core 2.1 to Runtime 2.1.11 and SDK 2.1.507
• BZ - 1712471 - new SocketException((int)SocketError.InvalidArgument).Message is empty

CVEs

• CVE-2019-0757
• CVE-2019-0820
• CVE-2019-0980
• CVE-2019-0981

References

• https://access.redhat.com/security/updates/classification/#important
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0757
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0980
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0981
• https://github.com/dotnet/core/blob/master/release-notes/2.1/2.1.11/2.1.11.md