Impact

Users of Adminer versions bundling all drivers (e.g. adminer.php) are affected.

Patches

Patched by ccd2374b, included in version 4.7.9.

Workarounds

• Use a single driver version (e.g. adminer-mysql.php).
• Protect access to Adminer also by other means, e.g. by HTTP password, IP address limiting or by OTP plugin.

References

https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf

For more information

If you have any questions or comments about this advisory:

• Comment at ccd2374b.

References

• GHSA-x5r2-hj5c-8jx6
• https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf
• https://packagist.org/packages/vrana/adminer
• https://sourceforge.net/p/adminer/news/2021/02/adminer-479-released/
• https://nvd.nist.gov/vuln/detail/CVE-2021-21311
• vrana/adminer@ccd2374
• https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html