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Debian Security Advisory DSA 3062-1 (wget - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
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.
Affected Software
Affected Software
wget on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
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.