Debian: DLA-3777-1 Moderate Threat from Composer RCE Vulnerability

CVE-2023-43655:

Users publishing a composer.phar
to a public web-accessible server where the composer.phar
can be executed as a php file may be subject to a
remote code execution vulnerability if PHP also has
`register_argc_argv` enabled in php.ini

Moreover, a specific debian problem was fixed, and
autoload.php for composer imports depends
from /usr/share/php instead of trusting
path resolution.

For Debian 10 buster, this problem has been fixed in version
1.8.4-1+deb10u3.

We recommend that you upgrade your composer packages.

For the detailed security status of composer please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/composer

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS