Some additional checks related to secure version of the application in
anti-rollback case have been added to avoid any attempts to boot lower
security version but valid application (e.g., passive partition image).
- Read secure_version under sha256 protection
- First check has been added in the bootloader to ensure correct secure
version after application verification and loading stage. This check
happens before setting up the flash cache mapping and handling over
the final control to application. This check ensures that application
was not swapped (e.g., to lower security version but valid image) just
before the load stage in bootloader.
- Second check has been added in the application startup code to ensure
that currently booting app has higher security version than the one
programmed in the eFuse for anti-rollback scenario. This will ensure
that only the legit application boots-up on the device for
anti-rollback case.
Currently sbom manifest is checked only in .gitmodules and
this check is done in pre-commit and also in CI. Meaning it's running
three times(pre-commit before push if user has it enabled, in CI
as there is the pre-commit run again and again with test in CI). Since
esp-idf-sbom contains a full manifest validation support and pre-commit
plugin for it, let's use it. This removes all the current sbom testing
and replaces it with a signle pre-commit plugin which validates all
manifests files(sbom.yml, idf_component.yml, .gitmodules and also
referenced manifests) in repository. Note that this checks all
manifests, not only ones which were modified. The check is reasonably
fast though, so it should not cause any problem. The reason for
validating all manifest files is that we want to make sure that the sbom
information in .gitmodules is updated too and that the hash
recorded in .gitmodules is up-to-date. Meaning submodule update
would not trigger this plugin, because no manifest was changed.
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
With 8959555cee7e[1] ("setup_git_directory(): add an owner check for the top..")
git added an ownership check of the git directory and refuses to
run any git commands, even parsing the config file, if the git directory
is not owned by the current user. The "fatal: detected dubious ownership in repository"
is reported.
This fixes CVE-2022-24765[2], which allows to compromise user account. On a
multi-user system or e.g. on a shared file system, one user may create a "rogue"
git repository with e.g. core.fsmonitor set to an arbitrary command. Other user
may unwillingly execute this command by running e.g. git-diff or
git-status within the "rogue" git repository, which may be in one of the parent
directories. If e.g. PS1 is set to display information about a git
repository in CWD, as suggested in Git in Bash[3], the user do not need to run
any git command to trigger this, just entering some subdirectory under
this "rogue" git repository is enough, because the git command will be
started transparently through the script used in PS1. The core.fsmonitor
can be set to arbitrary command. It's purpose is to help git to identify changed files
and speed up the scanning for changed files.
rogue
├── .git # owned by user1
└── dir1 # owned by user2
├── dir2 # owned by user2
└── .git # owned by user2
user1 sets core.fsmonitor for git repository in rogue directory
$ git config --add core.fsmonitor "bash -c 'rm -rf \$HOME'"
user2 enters dir1 and runs e.g. git diff and triggers the core.fsmonitor command.
The ownership check may cause problems when running git commands in
ESP-IDF Docker container. For example user may run the container as
root, but the mounted project may be owned by a particular user.
In this case git will refuse to execute any git command within the
"/project" directory, because it's not owned by root. To overcome this,
git allows to set safe.directories, for which the ownership check is
skipped. The security check may be completely disabled by setting
safe.directories to "*". This solution was proposed in PR 12636[4], but
it would allow make it possible to exploit this vulnerability again.
This fix allows user to specify git's safe.directory in IDF_GIT_SAFE_DIR
environmental variable, which may be set during container startup.
The IDF_GIT_SAFE_DIR has same format as PATH and multiple directories can be
specified by using a ":" separator. To entirely disable this git security check
within the container, user may set IDF_GIT_SAFE_DIR='*'. This might be
heplfull in CI.
Closes https://github.com/espressif/esp-idf/pull/12636
[1] - 8959555cee
[2] - https://nvd.nist.gov/vuln/detail/cve-2022-24765
[3] - https://git-scm.com/book/en/v2/Appendix-A%3A-Git-in-Other-Environments-Git-in-Bash
[4] - https://github.com/espressif/esp-idf/pull/12636
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
GDB on Windows incorrectly reads EOL in the script files causing 'gdb'
action to fail.
(gdb) source .../build/gdbinit/py_extensions
(gdb) source .../build\gdbinit\symbols
add symbol table from file "...\build\bootloader\bootloader.elf"
.../build\gdbinit\symbols:6: Error in sourced command file:
Undefined command: "". Try "help".
Forcing line separator to '\n' resolved the issue
Signed-off-by: Michal Jenikovsky <jendo@jmsystems.sk>
Add changes to use fast_pbkdf2 as default for PMK calculations.
fast_pbkdf2 is significantly faster than current implementations
for esp chips.
Also removes unnecessary code for pbkdf-sha256 and pbkdf-sha512.
