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osvGoogleOSV:ALSA-2023:2165
HistoryMay 09, 2023 - 12:00 a.m.

Important: edk2 security, bug fix, and enhancement update

2023-05-0900:00:00
Google
osv.dev
16
embedded development kit
uefi support
virtual machines
qemu
kvm
openssl
integer underflow
smm privilege escalation
timing attack
rsa decryption
double free
use-after-free.

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

10

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.1

Confidence

High

EPSS

0.006

Percentile

78.0%

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):

  • openssl: X.400 address type confusion in X.509 GeneralName (CVE-2023-0286)
  • edk2: integer underflow in SmmEntryPoint function leads to potential SMM privilege escalation (CVE-2021-38578)
  • openssl: timing attack in RSA Decryption implementation (CVE-2022-4304)
  • openssl: double free after calling PEM_read_bio_ex (CVE-2022-4450)
  • openssl: use-after-free following BIO_new_NDEF (CVE-2023-0215)

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.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

10

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.1

Confidence

High

EPSS

0.006

Percentile

78.0%