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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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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 (Secunia mirror)
CVE-2007-6200 (Secunia mirror)
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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6 Related Secunia Security Advisories
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1. rsync "xattr" Integer Overflow Vulnerability
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2. rsync "f_name()" Off-By-One Vulnerability
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3. Rsync "xattrs.diff" Patch Integer Overflow Vulnerability
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4. Rsync Path Sanitation Vulnerability
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5. rsync Allows Writing Files Outside the Intended Directory
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6. rsync File Handling Integer Overflow Vulnerability
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