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redhatRedHatRHSA-2024:4419
HistoryJul 09, 2024 - 9:41 a.m.

(RHSA-2024:4419) Important: edk2 security update

2024-07-0909:41:20
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1
embedded development kit
uefi support
buffer overflow
integer underflow
out of bounds read
predictable tcp initial sequence numbers
weak pseudorandom number generator
cve-2023-45235
cve-2023-45229
cve-2023-45231
cve-2023-45236
cve-2023-45237
dhcpv6
nd redirect
cvss score
acknowledgments

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.4

Confidence

High

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.

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.4

Confidence

High