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Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade lighttpd | Jul 30, 2024 | Dec 24, 2011 |
| Freebsd | — | Upgrade lighttpd | Dec 10, 2025 | Dec 28, 2011 |
| Gentoo Linux | — | Upgrade www-servers/lighttpd. | Oct 30, 2017 | Dec 24, 2011 |
| Http Lighttpd | — | Upgrade to the latest version of lighttpd | Dec 8, 2014 | Dec 24, 2011 |
| Oracle Solaris | — | Upgrade web/server/lighttpd-14 to version 1.4.23-0.175.0.6.0.2.0 on Solaris 11.0 | May 29, 2017 | Dec 24, 2011 |
| Suse | — | Upgrade lighttpd-mod_trigger_b4_dlUpgrade lighttpd-mod_webdavUpgrade lighttpd-mod_magnetUpgrade lighttpd-mod_cmlUpgrade lighttpdUpgrade lighttpd-mod_rrdtoolUpgrade lighttpd-mod_mysql_vhost | Dec 12, 2013 | Jun 28, 2013 |
| Ubuntu | — | Upgrade lighttpd | Nov 19, 2024 | Dec 24, 2011 |
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