Re: Check If Your Distro Is Vulnerable To XZ Backdoor

On 3/31/24 08:01, Farley Flud wrote:

Run this command to check if liblzma is linked to ssh:
 
ldd "$(command -v sshd)"
 
For example, on Gentoo (the best distro) I get:
 
linux-vdso.so.1 (0x00007ffff7fcb000)
         libcrypt.so.2 => /usr/lib64/libcrypt.so.2 (0x00007ffff7f6e000)
         libcrypto.so.3 => /usr/lib64/libcrypto.so.3 (0x00007ffff7a00000)
         libz.so.1 => /usr/lib64/libz.so.1 (0x00007ffff7f54000)
         libc.so.6 => /lib64/libc.so.6 (0x00007ffff783c000)
         /lib64/ld-linux-x86-64.so.2 (0x00007ffff7fcc000)
 
Nope.  There ain't no linking to liblzma, thus Gentoo is NOT affected
regardless of what version of xz-utils is installed.
 
Systemd is ultimately responsible and more and more hackers will be
looking for more and better ways of exploiting that 3 million loc
pile of junk.
 
Don't say we didn't tell you so.
 
To save your systems, downgrade xz-utils AND eliminate systemd.
 
 

>
What version of xz-utils is vulnerable?