Debian GNU/Linux Advisory: rsyncDec 04, 2003, 22:59 (0 Talkback[s])
The rsync team has received evidence that a vulnerability in all versions of rsync prior to 2.5.7, a fast remote file copy program, was recently used in combination with a Linux kernel vulnerability to compromise the security of a public rsync server.
While this heap overflow vulnerability could not be used by itself to obtain root access on an rsync server, it could be used in combination with the recently announced do_brk() vulnerability in the Linux kernel to produce a full remote compromise.
Please note that this vulnerability only affects the use of rsync as an "rsync server". To see if you are running a rsync server you should use the command "netstat -a -n" to see if you are listening on TCP port 873. If you are not listening on TCP port 873 then you are not running an rsync server.
For the stable distribution (woody) this problem has been fixed in version 2.5.5-0.2.
For the unstable distribution (sid) this problem has been fixed in version 2.5.6-1.1.
However, since the Debian infrastructure is not yet fully functional after the recent break-in, packages for the unstable distribution are not able to enter the archive for a while. Hence they were placed in my home directory on the security machine:
We recommend that you upgrade your rsync package immediately if you are providing remote sync services. If you are running testing and provide remote sync services please use the packages for woody.
will fetch the file for you
will install the referenced file.
If you are using the apt-get package manager, use the line for sources.list as given below:
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
Intel IA-32 architecture:
Intel IA-64 architecture:
HP Precision architecture:
Motorola 680x0 architecture:
Big endian MIPS architecture:
Little endian MIPS architecture:
Sun Sparc architecture:
These files will probably be moved into the stable distribution on its next revision.
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: email@example.com
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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