Description
lighttpd 1.4.18, and possibly other versions before 1.5.0, does not properly calculate the size of a file descriptor array, which allows remote attackers to cause a denial of service (crash) via a large number of connections, which triggers an out-of-bounds access.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | lighttpd | 1.4.18-2 | — |
| Debian 13 | lighttpd | 1.4.18-2 | — |
| Debian 12 | lighttpd | 1.4.18-2 | — |
| Debian 4.0 | lighttpd | 1.4.13-4etch9 | DSA-1609-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | lighttpd | 1.4.59-2.1 | openSUSE-SU-2024:10585-1 |
Advisories 2
- DSA-1609-1 lighttpd - multiple DOS issues Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10585-1 lighttpd-1.4.59-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- ADV-2008-0659 vdb-entry
- 29268 third-party-advisory
- 29066 third-party-advisory
- 29622 third-party-advisory
- SUSE-SR:2008:008 vendor-advisory
- 29209 third-party-advisory
- https://issues.rpath.com/browse/RPL-2284
- FEDORA-2008-2262 vendor-advisory
- GLSA-200803-10 vendor-advisory
- 20080228 rPSA-2008-0084-1 lighttpd mailing-list
- DSA-1609 vendor-advisory
- 29166 third-party-advisory
- http://wiki.rpath.com/Advisories:rPSA-2008-0084
- FEDORA-2008-2278 vendor-advisory
- 27943 vdb-entry
- 31104 third-party-advisory
- http://trac.lighttpd.net/trac/ticket/1562