RHSA-2024:7868 - Security Advisory

Topic

An update for .NET 8.0 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 is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 8.0.110 and .NET Runtime 8.0.10.

Security Fix(es):

• dotnet: kestrel: closing an HTTP/3 stream can cause a race condition and lead to remote code execution (CVE-2024-38229)
• dotnet: Multiple .NET components susceptible to hash flooding (CVE-2024-43483)
• dotnet: System.IO.Packaging - Multiple DoS vectors in use of SortedList (CVE-2024-43484)
• dotnet: Denial of Service in System.Text.Json (CVE-2024-43485)

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.Security Fix(es):

• dotnet: System.IO.Packaging - Multiple DoS vectors in use of SortedList (CVE-2024-43484)
• dotnet: Multiple .NET components susceptible to hash flooding (CVE-2024-43483)
• dotnet: Denial of Service in System.Text.Json (CVE-2024-43485)
• dotnet: kestrel: closing an HTTP/3 stream can cause a race condition and lead to remote code execution (CVE-2024-38229)

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.

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 IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat CodeReady Linux Builder for x86_64 8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x

Fixes

• BZ - 2315729 - CVE-2024-43484 dotnet: System.IO.Packaging - Multiple DoS vectors in use of SortedList
• BZ - 2315730 - CVE-2024-43483 dotnet: Multiple .NET components susceptible to hash flooding
• BZ - 2315731 - CVE-2024-43485 dotnet: Denial of Service in System.Text.Json
• BZ - 2316161 - CVE-2024-38229 dotnet: kestrel: closing an HTTP/3 stream can cause a race condition and lead to remote code execution

CVEs

• CVE-2024-38229
• CVE-2024-43483
• CVE-2024-43484
• CVE-2024-43485

References

• https://access.redhat.com/security/updates/classification/#important