RHSA-2024:4419 - Security Advisory

Topic

An update for edk2 is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.

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

EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM.

Security Fix(es):

• edk2: Buffer overflow when handling Server ID option from a DHCPv6 proxy Advertise message (CVE-2023-45235)
• edk2: Integer underflow when processing IA_NA/IA_TA options in a DHCPv6 Advertise message (CVE-2023-45229)
• edk2: Out of Bounds read when handling a ND Redirect message with truncated options (CVE-2023-45231)
• edk2: Predictable TCP Initial Sequence Numbers (CVE-2023-45236)
• edk2: Use of a Weak PseudoRandom Number Generator (CVE-2023-45237)

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 - Extended Update Support 9.2 x86_64
• Red Hat Enterprise Linux Server - AUS 9.2 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.2 aarch64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.2 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.2 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.2 ppc64le
• Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.2 s390x
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.2 aarch64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.2 aarch64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.2 aarch64

Fixes

• BZ - 2258677 - CVE-2023-45229 edk2: Integer underflow when processing IA_NA/IA_TA options in a DHCPv6 Advertise message
• BZ - 2258688 - CVE-2023-45231 edk2: Out of Bounds read when handling a ND Redirect message with truncated options
• BZ - 2258700 - CVE-2023-45235 edk2: Buffer overflow when handling Server ID option from a DHCPv6 proxy Advertise message
• BZ - 2258703 - CVE-2023-45236 edk2: Predictable TCP Initial Sequence Numbers
• BZ - 2258706 - CVE-2023-45237 edk2: Use of a Weak PseudoRandom Number Generator

CVEs

• CVE-2023-45229
• CVE-2023-45231
• CVE-2023-45235
• CVE-2023-45236
• CVE-2023-45237

References

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