Joined: 12 May 2004
|Posted: Thu Apr 17, 2008 12:26 pm Post subject: [ GLSA 200804-16 ] rsync: Execution of arbitrary code
|Gentoo Linux Security Advisory
Title: rsync: Execution of arbitrary code (GLSA 200804-16)
Date: April 17, 2008
A buffer overflow in rsync might lead to the remote execution of arbitrary
code when extended attributes are being used.
rsync is a file transfer program to keep remote directories
Vulnerable: < 2.6.9-r6
Unaffected: >= 2.6.9-r6
Architectures: All supported architectures
Sebastian Krahmer of SUSE reported an integer overflow in the
expand_item_list() function in the file util.c which might lead to a
heap-based buffer overflow when extended attribute (xattr) support is
A remote attacker could send a file containing specially crafted
extended attributes to an rsync deamon, or entice a user to sync from
an rsync server containing specially crafted files, possibly leading to
the execution of arbitrary code.
Please note that extended attributes are only enabled when USE="acl" is
enabled, which is the default setting.
Disable extended attributes in the rsync daemon by setting " refuse
options = xattrs " in the file "/etc/rsyncd.conf" (or append
"xattrs" to an existing "refuse" statement). When synchronizing to a
server, do not provide the "-X" parameter to rsync. You can also
disable the "acl" USE flag for rsync and recompile the package.
All rsync users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/rsync-2.6.9-r6"
Last edited by GLSA on Tue Feb 24, 2015 4:26 am; edited 4 times in total