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Debian Security Advisory 5624-1

Debian Security Advisory 5624-1
Posted Feb 15, 2024
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5624-1 - Mate Kukri discovered the Debian build of EDK2, a UEFI firmware implementation, used an insecure default configuration which could result in Secure Boot bypass via the UEFI shell.

tags | advisory, shell
systems | linux, debian
advisories | CVE-2023-48733
SHA-256 | edeab3ca9fb62395b5cb0f4a0f796af3d4f2e0bf05a3127e4d9d601b63ad671c

Debian Security Advisory 5624-1

Change Mirror Download
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-5624-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
February 14, 2024 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : edk2
CVE ID : CVE-2023-48733

Mate Kukri discovered the Debian build of EDK2, a UEFI firmware
implementation, used an insecure default configuration which could result
in Secure Boot bypass via the UEFI shell.

This updates disables the UEFI shell if Secure Boot is used.

For the oldstable distribution (bullseye), this problem has been fixed
in version 2020.11-2+deb11u2.

For the stable distribution (bookworm), this problem has been fixed in
version 2022.11-6+deb12u1. This update also addresses several security
issues in the ipv6 network stack (CVE-2022-36763, CVE-2022-36764,
CVE-2022-36765, CVE-2023-45230, CVE-2023-45229, CVE-2023-45231,
CVE-2023-45232, CVE-2023-45233, CVE-2023-45234, CVE-2023-45235)

We recommend that you upgrade your edk2 packages.

For the detailed security status of edk2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/edk2

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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