Package "shim"
| Name: |
shim
|
Description: |
boot loader to chain-load signed boot loaders under Secure Boot
|
| Latest version: |
15.8-0ubuntu1 |
| Release: |
jammy (22.04) |
| Level: |
updates |
| Repository: |
main |
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Changelog
|
shim (15.8-0ubuntu1) mantic; urgency=medium
* New upstream version 15.8 (LP: #2051151):
- pe: Align section size up to page size for mem attrs (LP: #2036604)
- SBAT level: shim,4
- SBAT policy:
- Latest: "shim,4\ngrub,3\ngrub.debian,4\n"
- Automatic: "shim,2\ngrub,3\ngrub.debian,4\n"
- Note that this does not yet revoke pre NTFS CVE fix GRUB binaries.
* SECURITY UPDATE: a bug in an error message [LP: #2051151]
- mok: fix LogError() invocation
- CVE-2023-40546
* SECURITY UPDATE: out-of-bounds write and UEFI Secure Boot bypass
when booting via HTTP [LP: #2051151]
- avoid incorrectly trusting HTTP headers
- CVE-2023-40547
* SECURITY UPDATE: out-of-bounds write and possible bug [LP: #2051151]
- Fix integer overflow on SBAT section size on 32-bit system
- CVE-2023-40548
* SECURITY UPDATE: out-of-bounds read and possible bug [LP: #2051151]
- Authenticode: verify that the signature header is in bounds.
- CVE-2023-40549
* SECURITY UPDATE: out-of-bounds read and possible bug [LP: #2051151]
- pe: Fix an out-of-bound read in verify_buffer_sbat()
- CVE-2023-40550
* SECURITY UPDATE: out-of-bounds read and possible bug [LP: #2051151]
- pe-relocate: Fix bounds check for MZ binaries
- CVE-2023-40551
* debian/rules: Update COMMIT_ID
-- Mate Kukri <email address hidden> Thu, 25 Jan 2024 08:55:28 +0000
|
| Source diff to previous version |
| CVE-2023-40546 |
A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an err |
| CVE-2023-40547 |
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This |
| CVE-2023-40548 |
A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed |
| CVE-2023-40549 |
An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an atta |
| CVE-2023-40550 |
An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's |
| CVE-2023-40551 |
A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during t |
|
|
shim (15.7-0ubuntu1) kinetic; urgency=medium
* New upstream version 15.7 (LP: #1996503), highlights:
- Enable TDX measurements (LP: #1995852)
- Flush the memory region from i-cache before execution (LP: #1987541)
- Introspectable SBAT payload for TPM resealing efforts
- Don't measure MokListTrusted to PCR7
- SBAT level: shim,3
- SBAT policy bumped to for grub,2 in previous and grub,3 in latest:
SBAT policy: latest="shim,2\ngrub,3\n" previous="grub,2\n"
Note that shim requirement was not bumped as shim,2 shims are not
commonly available yet.
* SECURITY FIX: Buffer overflow when loading crafted EFI images.
- CVE-2022-28737
* Rebase patches, only ubuntu-no-addend-vendor-dbx.patch remains
* Import 20221103 Canonical vendor dbx.
This vendor dbx revokes all certificates that have been used
so far.
- CN = Canonical Ltd. Secure Boot Signing
- CN = Canonical Ltd. Secure Boot Signing (2017)
- CN = Canonical Ltd. Secure Boot Signing (ESM 2018)
- CN = Canonical Ltd. Secure Boot Signing (2019)
- CN = Canonical Ltd. Secure Boot Signing (Ubuntu Core 2019)
- CN = Canonical Ltd. Secure Boot Signing (2021 v1)
- CN = Canonical Ltd. Secure Boot Signing (2021 v2)
- CN = Canonical Ltd. Secure Boot Signing (2021 v3)
* Build-Depend on libefivar-dev
* debian/rules: Update COMMIT_ID
-- Julian Andres Klode <email address hidden> Fri, 18 Nov 2022 16:00:39 +0100
|
| 1996503 |
shim 15.7-0ubuntu1 |
| 1995852 |
shim TDX enablement |
| 1987541 |
shim executes GRUB w/ dirty instruction cache on arm64 |
|
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