Debian Security Advisory

DSA-3062-1 wget -- security update

Date Reported:
01 Nov 2014
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 766981.
In Mitre's CVE dictionary: CVE-2014-4877.
More information:

HD Moore of Rapid7 discovered a symlink attack in Wget, a command-line utility to retrieve files via HTTP, HTTPS, and FTP. The vulnerability allows to create arbitrary files on the user's system when Wget runs in recursive mode against a malicious FTP server. Arbitrary file creation may override content of user's files or permit remote code execution with the user privilege.

This update changes the default setting in Wget such that it no longer creates local symbolic links, but rather traverses them and retrieves the pointed-to file in such a retrieval.

For the stable distribution (wheezy), this problem has been fixed in version 1.13.4-3+deb7u2.

For the unstable distribution (sid), this problem has been fixed in version 1.16-1.

We recommend that you upgrade your wget packages.