Firebird SYSDBA unauthorized access

firebird-sysdba-unauth-access (42299) The risk level is classified as HighHigh Risk

Description:

The Gentoo Linux Firebird init script could allow a remote attacker to obtain unauthorized access, caused by the ISC_PASSWORD environment variable being set when initially connecting to Firebird. By then initiating a client connection to the SYSDBA user account without supplying a password, a remote attacker could exploit this vulnerability to gain unauthorized access to the database.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 4.4
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Refer to GLSA 200805-06 for patch, upgrade or suggested workaround information. See References.

References:

  • Firebird Web site: Firebird - The RDBMS that's going where you're going.
  • BID-29123: Firebird 'ISC_PASSWORD' Environment Variable Unauthorized Access Vulnerability
  • CVE-2008-1880: The default configuration of Firebird before 2.0.3.12981.0-r6 on Gentoo Linux sets the ISC_PASSWORD environment variable before starting Firebird, which allows remote attackers to bypass SYSDBA authentication and obtain sensitive database information via an empty password.
  • GLSA 200805-06: Firebird: Data disclosure
  • GLSA-200805-06: Firebird: Data disclosure
  • OSVDB ID: 44976: Firebird on Gentoo Linux /etc/conf.d/firebird Invocation ISC_PASSWORD Authentication Bypass

Platforms Affected:

  • FirebirdSQL Firebird 2.0.3.12981.0
  • Gentoo Linux

Reported:

May 09, 2008

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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