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Firebird "connect" Request Buffer Overflow and Denial of Service
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Secunia Advisory:
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SA25601
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Release Date:
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2007-06-12
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Last Update:
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2007-07-11
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Popularity:
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5,819 views
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Critical:
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Moderately critical
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Impact:
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DoS
System access
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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: | Firebird 2.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Some vulnerabilities have been reported in Firebird, which can be exploited by malicious users to cause a DoS (Denial of Service) and malicious people to compromise a vulnerable system.
1 ) A vulnerability is caused due to an error within the handling of "connect" requests (0x1) with a large "p_cnct_count" value. This can be exploited to cause a buffer overflow by sending a specially crafted connect request to a vulnerable server (default port 3050/TCP).
2) The "filter_transliterate_text()" function in filters.cpp does not handle certain blob segments correctly. This can lead to an integer truncation which causes the "copy_blob()" in blb.cpp to handle a segment of size 0, resulting in an infinite loop.
The vulnerabilities are reported in Firebird 2. Other versions may also be affected.
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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