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Debian GNU/Linux Advisory: rsync

Dec 04, 2003, 22:59 (0 Talkback[s])

Debian Security Advisory DSA 404-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
December 4th, 2003 http://www.debian.org/security/faq

Package : rsync
Vulnerability : heap overflow
Problem-Type : remote
Debian-specific : no
CVE ID : CAN-2003-0962

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.

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: 545 466c30b8dac303dc23a4e33bb64710ca
Size/MD5 checksum: 91526 a81021e1b1b60ae99e3fc95262ca96d6
Size/MD5 checksum: 415156 39d76c62684750842d3884a77c2e5466

Alpha architecture:

Size/MD5 checksum: 227344 b885337ced8ec3c902b4ef43d560cff5

ARM architecture:

Size/MD5 checksum: 206240 4e39539b438128912b4d0f4971134eb4

Intel IA-32 architecture:

Size/MD5 checksum: 199034 50f61c7b8a009767093e36ba68790a7b

Intel IA-64 architecture:

Size/MD5 checksum: 255378 886348cd33646fc167da6b1a9cbdc165

HP Precision architecture:

Size/MD5 checksum: 213962 6057690f85e14d01072ab6a84ad52996

Motorola 680x0 architecture:

Size/MD5 checksum: 189620 d3c784bb621d2c7a66a2bd3fa418fad8

Big endian MIPS architecture:

Size/MD5 checksum: 216122 f22358818b785d4bdb43cc56e0140f0a

Little endian MIPS architecture:

Size/MD5 checksum: 216420 1e40db535e7b1d8340d65f101b2bb60a

PowerPC architecture:

Size/MD5 checksum: 205436 d4bc1decf806f2102f434875ab4aa66e

Sun Sparc architecture:

Size/MD5 checksum: 205234 510bca72eacacf257b170da8c66b2255

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: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>