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Samba Information Disclosure and Denial of Service
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Secunia Advisory:
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SA36893
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Release Date:
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2009-10-01
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Popularity:
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1,534 views
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Critical:
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Less critical
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Impact:
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Exposure of sensitive information
DoS
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | Samba 3.x
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Secunia CVSS-2 Score:
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Available in Secunia business solutions 
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Some weaknesses and a vulnerability have been reported in Samba, which can be exploited by malicious, local users to disclose potentially sensitive information, and by malicious users to disclose sensitive information and cause a DoS (Denial of Service).
1) The mount.cifs application does not properly verify if opening a credentials file crosses the privileges of the invoking user. This can be exploited to disclose partial file contents by using the "--verbose" or "-v" option and passing the file as credentials file to mount.cifs.
Successful exploitation requires that mount.cifs is suid root.
2) An infinite loop exists when processing certain SMB requests. This can be exploited to cause a DoS due to CPU consumption by sending a specially crafted request to the Samba server.
Successful exploitation requires that the attacker is authenticated.
3) Samba does not properly handle /etc/passwd entries with empty home directories, which can lead to access to the root file system and all subdirectories.
Successful exploitation requires that an /etc/passwd entry with an empty home directory exists and automated "[homes]" sharing is enabled or a share with the username of the affected entry exists.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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