shim | systemd | |
---|---|---|
20 | 520 | |
806 | 12,580 | |
2.7% | 2.1% | |
7.0 | 10.0 | |
6 days ago | 5 days ago | |
C | C | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
shim
- Critical bug that exists in every Linux boot loader signed in the past decade
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Signing a UEFI module
Microsoft doesn't really sign other people's code for UEFI. They do sign shim (https://github.com/rhboot/shim) which will look at other keys the user registered with UEFI to load other components to enable you to write custom third party UEFI modules while still supporting secure boot.
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The vendor-locking is for your own safety. Do not resist.
In this case, the distros first boot loader is shim, which is signed by Microsoft. Shim is FOSS: https://github.com/rhboot/shim
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SBAT for rEFInd
How do I get dual boot set up and running? There doesn't seem so much documentation about this sbat chicanery as it was introduced to shim in 2021 and patched in rEFInd a bit more than a month ago, so I suppose not enough people have had this trouble yet.
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Microsoft VS BlackLotus Malware
Secure boot still isn't "secure" at all because microsoft has signed multiple bootloaders with their own keys, which exist only to chain load a second bootloader. See https://github.com/rhboot/shim and https://blog.hansenpartnership.com/linux-foundation-secure-boot-system-released/
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First in-the-wild UEFI bootkit bypassing UEFI Secure Boot
A new mechanism called SBAT (https://github.com/rhboot/shim/blob/main/SBAT.md) is now used to allow revocation of groups of bootloaders rather than individual hashes in order to mitigate the resource consumption
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Ultimate guide to Pop OS secure boot with NVIDIA.
{ echo "sbat,1,SBAT Version,sbat,1,https://github.com/rhboot/shim/blob/main/SBAT.md" echo "systemd-boot,1,systemd,systemd-boot,1,https://systemd.io" } > sbat.csv
- How to add an SBAT section to grub and resign?
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Unable to install Fedora 36 with secure boot enabled.
Yeah, that incident instigated a totally new approach to revoking bad bootloaders that everybody (including Microsoft) should be using nowadays. So I guess HP just never got the memo.
- Invalid image when trying to boot Nobara Project USB image (both Gnome and KDE)
systemd
- Dlopen() Metadata for ELF Files
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PoC to demonstrate root permission hijacking by exploiting "systemd-run"
No, the OP was not sent any harassment, the OP _did_ the harassment as it can be seen in the tweets. I mean, they are right there, just click on the links you shared. One of the OP's followers even openly called for the assassination of the project maintainer, and you have the galls to defend him? This is truly deranged stuff.
And again, there is no "vulnerability", there is simply a person that doesn't know how Linux works and has learned something new. Which again it's fine, nobody knows everything and we all learn new things everyday, it's just that normal and sensible people don't use that to make grand claims on social media and start harassment campaigns culminating in death threats.
Professional security researchers responsibly report real issues using the appropriate channels, such as defined at: https://github.com/systemd/systemd/security/policy this is not the work of a researcher, this is a grifter looking for self-promotion on social media.
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Run0 – systemd based alternative to sudo announced
> 3. even `adduser` will not allow it by default
5. useradd does allow it (as noted in a comment). 6. Local users are not the only source, there things like LDAP and AD.
7. POSIX allows it:
* https://github.com/systemd/systemd/issues/6237#issuecomment-...
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Systemd Rolling Out "run0" As sudo Alternative
> I for one love to type out 13 extra characters
FWIW, systemd is normally pretty good at providing autocomplete suggestions, so even if you don't want to set up an alias you'll probably just have to type `--b ` to set it.
> I wonder what random ASCII escape sequences we can send.
According to the man page source[0]:
> The color specified should be an ANSI X3.64 SGR background color, i.e. strings such as `40`, `41`, …, `47`, `48;2;…`, `48;5;…`
and a link to the relevant Wikipedia page[1]. Given systemd's generally decent track record wrt defects and security issues, and the simplicity of valid colour values, I expect there's a fairly robust parameter verifier in there.
In fact, given the focus on starting the elevated command in a highly controlled environment, I'd expect the colour codes to be output to the originating terminal, not forwarded to the secure pty. That way, the only thing malformed escapes can affect is your own process, which you already have full control over anyway.
(Happy to be shown if that's a mistaken expectation though.)
[0] https://github.com/systemd/systemd/blob/main/man/run0.xml
[1] https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_G...
- Crash-only software: More than meets the eye
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Systemd Wants to Expand to Include a Sudo Replacement
bash & zsh are supported by upstream: https://github.com/systemd/systemd/tree/main/shell-completio...
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"Run0" as a Sudo Replacement
the right person to replace sudo, not: https://github.com/systemd/systemd/issues/6237
PS: https://pwnies.com/systemd-bugs/
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Linux fu: getting started with systemd
https://github.com/systemd/systemd/issues/32028#issuecomment...
There are some very compelling arguments made there if you care to read them
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Ubuntu 24.04 (and Debian) removed libsystemd from SSH server dependencies
Maybe it was because you weren't pointing out anything new?
There was a pull request to stop linking libzma to systemd before the attack even took place
https://github.com/systemd/systemd/pull/31550
This was likely one of many things that pushed the attackers to work faster, and forced them into making mistakes.
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Systemd minimizing required dependencies for libsystemd
The PR for changing compression libraries to use dlopen() was opened several weeks before the xz-utils backdoor was revealed.
https://github.com/systemd/systemd/pull/31550
What are some alternatives?
tpm-km - yet another pack of scripts for TPM2+Luks
openrc - The OpenRC init system
tpm-luks
tini - A tiny but valid `init` for containers
tpm2KeyUnlock - Adds an automated unlock function based on TPM policy installation
inotify-tools - inotify-tools is a C library and a set of command-line programs providing a simple interface to inotify.
tpm2-initramfs-tool - Tool used in initramfs to seal/unseal FDE key to the TPM
s6 - The s6 supervision suite.
WoeUSB - A Microsoft Windows® USB installation media preparer for GNU+Linux
earlyoom - earlyoom - Early OOM Daemon for Linux
stig - TUI and CLI for the BitTorrent client Transmission
supervisor - Supervisor process control system for Unix (supervisord)