Technical Description

Multiple vulnerabilities have been identified in Firebird, which could be exploited by remote attackers to cause a denial of service or take complete control of an affected system.

The first issue is caused by a buffer overflow error when processing an overly long username, which could be exploited by remote unauthenticated attackers to crash a vulnerable server or execute arbitrary code.

The second issue is caused by memory corruption errors when processing malformed "op_receive", "op_start", "op_start_and_receive", "op_send", "op_start_and_send", and "op_start_send_and_receive" XDR requests, which could be exploited to crash an affected application or potentially execute arbitrary code.

Affected Products

Firebird versions prior to 2.1 RC1

Solution

Upgrade to Firebird version 2.1 RC1 :
http://sourceforge.net/projects/firebird/

References

http://www.vupen.com/english/advisories/2008/0300
http://sourceforge.net/project/shownotes.php?release_id=570816&group_id=9028
http://www.coresecurity.com/?action=item&id=2095

Credits

Vulnerabilities reported by the vendor, Damian Frizza and Alfredo Ortega (Core Security Technologies).

ChangeLog

2008-01-28 : Initial release
2008-01-29 : Updated Description

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