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rsync Two Security Bypass Vulnerabilities
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Secunia Advisory:
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SA27863
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Release Date:
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2007-11-30
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Last Update:
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2007-12-03
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Popularity:
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7,765 views
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Critical:
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Less critical
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Impact:
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Security Bypass
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | rsync 2.x
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| CVE reference: | CVE-2007-6199
CVE-2007-6200
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Description:
Two vulnerabilities have been reported in rsync, which can be exploited by malicious users to bypass certain security restrictions.
1) An error in the rsync daemon when the "use chroot" option is disabled can be exploited to gain access to files outside of the module's hierarchy via symlink attacks.
2) An error exists within the enforcing of the "exclude", "exclude from", and "filter" options. This can be exploited to bypass access restrictions and gain access to hidden files via e.g. symlink attacks, if the filename is known.
The vulnerabilities are reported in version 2.6.9. Prior versions may also be affected.
Solution:
Apply vendor patch.
http://rsync.samba.org/ftp/rsync/munge-symlinks-2.6.9.diff
The vendor recommends users to read the "munge symlinks" section contained within the updated rsyncd.conf manpage.
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-12-03: Added CVE reference.
Original Advisory:
http://rsync.samba.org/security.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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