PT-2009-5020 · Firebird · Firebird Sql

Francisco Falcon · Published 2009-07-29 · Updated 2025-10-10 · CVE-2009-2620

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions Firebird SQL versions 1.5 through 1.5.5 Firebird SQL versions 2.0 through 2.0.5 Firebird SQL versions 2.1 through 2.1.2 Firebird SQL versions 2.5 through 2.5 Beta 1

Description The issue allows remote attackers to cause a denial of service, resulting in a daemon crash. This is achieved by sending a malformed op connect request message, which can trigger an infinite loop or a NULL pointer dereference in the src/remote/server.cpp component of fbserver.exe.

Recommendations For Firebird SQL versions 1.5 through 1.5.5, update to version 1.5.6 or later. For Firebird SQL versions 2.0 through 2.0.5, update to version 2.0.6 or later. For Firebird SQL versions 2.1 through 2.1.2, update to version 2.1.3 or later. For Firebird SQL versions 2.5 through 2.5 Beta 1, update to version 2.5 Beta 2 or later.

Exploit

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2009-2620

Affected Products

Firebird Sql

References · 11

• 🔥 http://securityfocus.com/bid/35842 · Exploit
• 🔥 http://coresecurity.com/content/firebird-sql-dos · Exploit
• 🔥 http://exploit-db.com/exploits/9295 · Exploit
• 🔥 https://exploit-db.com/exploits/9295 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2009-2620 · Security Note
• http://tracker.firebirdsql.org/browse/CORE-2563 · Vendor Advisory
• https://redhat.com/archives/fedora-package-announce/2009-August/msg01341.html · Vendor Advisory
• https://redhat.com/archives/fedora-package-announce/2009-August/msg01370.html · Vendor Advisory
• https://t.me/cveNotify/138052 · Telegram Post
• https://t.me/cveNotify/138118 · Telegram Post
• https://bugzilla.redhat.com/show_bug.cgi?id=514463 · Note