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webfs Directory Traversal and Pathname Buffer Overflow
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Secunia Advisory:
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SA9879
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Release Date:
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2003-09-30
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Popularity:
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5,592 views
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Critical:
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Moderately critical
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Impact:
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Exposure of system information
Exposure of sensitive information
Privilege escalation
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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: | webfs 1.x
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| CVE reference: | CVE-2003-0832
CVE-2003-0833
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Description:
Two vulnerabilities have been reported in webfs, which can be exploited by malicious people to disclose the contents of arbitrary files or by malicious, local users to escalate their privileges.
It is possible to conduct a directory traversal attack by specifying ".." as a hostname when virtual hosting is enabled. This may disclose the contents of arbitrary files outside the web root.
There is a boundary error in "ls.c" when handling pathnames. This can be exploited to cause a buffer overflow by constructing an overly long, specially crafted pathname.
Successful exploitation may allow execution of arbitrary code with the privileges of the web server but requires that a malicious, local user has write privileges to a directory readable by the web server.
Solution:
Update to version 1.20:
http://bytesex.org/misc/webfs_1.20.tar.gz
Provided and/or discovered by:
Jens Steube
Original Advisory:
Product changelog.
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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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