Debian Linux Security Advisory 3062-1 - 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.
81ca62ff439d497dff2d7be293884c4948bacdd36c50899703bccdedf1e419e2
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
- -------------------------------------------------------------------------
Debian Security Advisory DSA-3062-1 security@debian.org
http://www.debian.org/security/ Luciano Bello
November 01, 2014 http://www.debian.org/security/faq
- -------------------------------------------------------------------------
Package : wget
CVE ID : CVE-2014-4877
Debian Bug : 766981
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.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=bD/d
-----END PGP SIGNATURE-----