rsync before 2.6.1 does not properly sanitize paths when running a read/write daemon without using chroot, which allows remote attackers to write files outside of the module's path.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A967
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9495
https://exchange.xforce.ibmcloud.com/vulnerabilities/16014
http://www.trustix.net/errata/misc/2004/TSL-2004-0024-rsync.asc.txt
http://www.slackware.org/security/viewer.php?l=slackware-security&y=2004&m=slackware-security.403462
http://www.securityfocus.com/bid/10247
http://www.redhat.com/support/errata/RHSA-2004-192.html
http://www.mandriva.com/security/advisories?name=MDKSA-2004:042
http://www.gentoo.org/security/en/glsa/glsa-200407-10.xml
http://www.debian.org/security/2004/dsa-499
http://www.ciac.org/ciac/bulletins/o-212.shtml
http://www.ciac.org/ciac/bulletins/o-134.shtml
http://secunia.com/advisories/12054
http://secunia.com/advisories/11993
http://secunia.com/advisories/11688
http://secunia.com/advisories/11669
http://secunia.com/advisories/11583
http://secunia.com/advisories/11537
http://secunia.com/advisories/11523
http://secunia.com/advisories/11515