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30d1791eb2
While CVE-2019-6111 was already fixed in 2025.89, the version 2026.90
provided a follow up of that fix.
Note that the author provided this note with this patch:
> Note breaking change: "-r" is now disallowed when the target directory exists
> (an additional change in Dropbear's version). If that's required an alternative
> such as rsync could be used.
Adapt your usage of dropbear accordingly.
- CVE-2019-6111:
An issue was discovered in OpenSSH 7.9. Due to the scp implementation
being derived from 1983 rcp, the server chooses which
files/directories are sent to the client. However, the scp client only
performs cursory validation of the object name returned (only
directory traversal attacks are prevented). A malicious scp server (or
Man-in-The-Middle attacker) can overwrite arbitrary files in the scp
client target directory. If recursive operation (-r) is performed, the
server can manipulate subdirectories as well (for example, to
overwrite the .ssh/authorized_keys file).
For more information, see:
https://www.cve.org/CVERecord?id=CVE-2019-6111
- CVE-2026-35385:
In OpenSSH before 10.3, a file downloaded by scp may be installed
setuid or setgid, an outcome contrary to some users' expectations, if
the download is performed as root with -O (legacy scp protocol) and
without -p (preserve mode).
For more information, see:
https://www.cve.org/CVERecord?id=CVE-2026-35385
[1] https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2026.90
(cherry picked from commit 5b136c89ff)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at https://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches