Debian Security Advisory

DLA-2887-1 lighttpd -- LTS security update

Date Reported:
18 Jan 2022
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2018-19052.
More information:

One issue has been discovered in lighttpd: fast webserver with minimal memory footprint.

  • CVE-2018-19052:

    an issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50. There is potential ../ path traversal of a single directory above an alias target, with a specific mod_alias configuration where the matched alias lacks a trailing '/' character, but the alias target filesystem path does have a trailing '/' character.

For Debian 9 stretch, this problem has been fixed in version 1.4.45-1+deb9u1.

We recommend that you upgrade your lighttpd packages.

For the detailed security status of lighttpd please refer to its security tracker page at:

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