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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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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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| | CVE reference: | CVE-2007-3181 (Secunia mirror)
CVE-2007-3527 (Secunia mirror)
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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.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.
Solution:
Update to version 2.0.1.
Provided and/or discovered by:
1) Cody Pierce, TippingPoint DVLabs
2) Andrew Guts
Changelog:
2007-06-15: Added CVE reference.
2007-07-11: Added vulnerability #2.
Original Advisory:
1) http://dvlabs.tippingpoint.com/advisory/TPTI-07-11
2) http://tracker.firebirdsql.org/browse/CORE-1063
Other References:
http://www.firebirdsql.org/rlsnotes/Firebird-2.0.1-ReleaseNotes.pdf
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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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3 Related Secunia Security Advisories
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1. Firebird Multiple Vulnerabilities
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2. Firebird 2 Multiple Buffer Overflow Vulnerabilities
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3. Firebird Multiple Vulnerabilities
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