Thomas Petazzoni 6ed83c91aa package/pkg-generic.mk: use more sensible default value for <pkg>_CPE_ID_UPDATE
Setting the "update" field in the CPE ID to * doesn't actually make
much sense, as * is a wildcard. Instead, this field should really
reflect the "subrelease" / "update" of the package, which unless
specified explicitly by the package .mk file, is empty.

Using a wildcard causes a few CVEs to be incorrectly identified as
affecting some of our packages.

For example https://nvd.nist.gov/vuln/detail/CVE-2013-1428 has a
CPE configuration that goes like this:

cpe:2.3:a:tinc-vpn:tinc:*:pre6:*:*:*:*:*:* up to including 1.1

and this CPE configuration is currently identified as affecting our
package. This isn't correct as our package is using 1.0.36, not a
"pre6" version. But because the CPE ID generated by Buildroot uses *
as the "update" field, and * is the wildcard, it does match with this
CPE configuration.

After this change, two CVEs are no longer identified as affecting
Buildroot packages:

  https://nvd.nist.gov/vuln/detail/CVE-2013-1428
  https://nvd.nist.gov/vuln/detail/CVE-2017-9454

and in both cases they are indeed CVEs not affecting our package.

Reported-by: Titouan Christophe <titouan.christophe@mind.be>
Cc: Titouan Christophe <titouan.christophe@mind.be>
Cc: Thomas Perale <thomas.perale@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Titouan Christophe <titouan.christophe@mind.be>
Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>
(cherry picked from commit 53a8616460)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
2025-11-15 17:38:52 +01:00
2024-09-14 11:20:06 +02:00
2025-01-15 21:30:31 +01:00
2025-10-11 23:12:08 +02:00
2025-10-11 23:14:29 +02:00

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 http://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
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