Debian: 'wu-ftpd' insecure program execution
Summary
wu-ftpd, an FTP server, implements a feature whereby multiple files
can be fetched in the form of a dynamically constructed archive file,
such as a tar archive. The names of the files to be included are
passed as command line arguments to tar, without protection against
them being interpreted as command-line options. GNU tar supports
several command line options which can be abused, by means of this
vulnerability, to execute arbitrary programs with the privileges of
the wu-ftpd process.
Georgi Guninski pointed out that this vulnerability exists in Debian
woody.
For the stable distribution (woody) this problem has been fixed in
version 2.6.2-3woody2.
For the unstable distribution (sid) this problem will be fixed soon.
We recommend that you update your wu-ftpd package.
Upgrade Instructions
--------------------
wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
If you are using the apt-get package manager, use the line for
sources.list as given below:
apt-get update
will update the internal database
apt-get upgrade
will install corrected packages
You may use an automated update by adding the resources from the
footer to the proper configuration.
Debian GNU/Linux 3.0 alias woody
--------------------------------
Source archives:
Size/MD5 checksum: 607 b557af23920403ce4be64670a873a1dd
Size/MD5 checksum: 100389 c2e481768ed3a0d97a110bc3cd4aefa2
Size/MD5 checksum: 354784 b3c271f02aadf663b8811d1bff9da3f6
Architecture independent components:
Size/MD5 checksum: 3474 ae0a727f52cf8f1488222ce2b414a29a
Alpha architecture:
Size/MD5 checksum: 291710 d9725bc2a271f151fc42605edd6394c6
ARM architecture:
Size/MD5 checksum: 265366 d435ee1977a93705462528b23b8c9550
Intel IA-32 architecture:
Size/MD5 checksum: 257060 ed807ebe3275f76a13eed4fbb2d8a7fa
Intel IA-64 architecture:
Size/MD5 checksum: 321256 beaa9b061436052fddf3f47e2932360a
HP Precision architecture:
Size/MD5 checksum: 275896 c1bea3e7f0cdbab6c7240d5b08b4b9d1
Motorola 680x0 architecture:
Size/MD5 checksum: 249368 32f06b3bbe19265f749670950691c7ff
Big endian MIPS architecture:
Size/MD5 checksum: 272978 1ec11e5a9b53925b02fb7cfbbc3df56b
Little endian MIPS architecture:
Size/MD5 checksum: 273058 37140e512eaa62cfa0b99b9983e89b6f
PowerPC architecture:
Size/MD5 checksum: 268354 4da902291bc8bb6c5c652dfd9f7ba729
IBM S/390 architecture:
Size/MD5 checksum: 263100 a89f0be201d65cff953bc496a6391af4
Sun Sparc architecture:
Size/MD5 checksum: 270448 088bb0a66ee5b74ec59baff506a2be2a
These files will probably be moved into the stable distribution on
its next revision.