Firebird up to 2.5.6/3.0.1 udf Subsystem fbudf.so access control

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Firebird up to 2.5.6/3.0.1. This impacts an unknown function of the file fbudf.so of the component udf Subsystem. Such manipulation leads to access control. This vulnerability is uniquely identified as CVE-2017-6369. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Firebird up to 2.5.6/3.0.1 (Database Administration Software) and classified as critical. Affected by this issue is some unknown functionality of the file fbudf.so of the component udf Subsystem. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Insufficient checks in the UDF subsystem in Firebird 2.5.x before 2.5.7 and 3.0.x before 3.0.2 allow remote authenticated users to execute code by using a 'system' entrypoint from fbudf.so.

The bug was discovered 02/01/2017. The weakness was disclosed 03/24/2017 (Website). The advisory is shared for download at tracker.firebirdsql.org. This vulnerability is handled as CVE-2017-6369 since 02/28/2017. The attack may be launched remotely. A simple authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 26 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 97449 (Fedora 25 : firebird (2017-0fbbb732a3)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197412 (Ubuntu Security Notification for Firebird2.5 Vulnerabilities (USN-3929-1)).

Upgrading to version 2.5.7 or 3.0.2 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97449) and SecurityFocus (BID 97070†). The entry VDB-73258 is pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97449
Nessus Name: Fedora 25 : firebird (2017-0fbbb732a3)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703824
OpenVAS Name: Debian Security Advisory DSA 3824-1 (firebird2.5 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firebird 2.5.7/3.0.2

Timelineinfo

02/01/2017 🔍
02/27/2017 +26 days 🔍
02/28/2017 +1 days 🔍
03/01/2017 +1 days 🔍
03/24/2017 +23 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
10/09/2025 +3121 days 🔍

Sourcesinfo

Advisory: FEDORA-2017-0fbbb732a3
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6369 (🔍)
GCVE (CVE): GCVE-0-2017-6369
GCVE (VulDB): GCVE-100-98492

OVAL: 🔍

SecurityFocus: 97070 - Firebird CVE-2017-6369 Remote Code Execution Vulnerability
OSVDB: - CVE-2017-6369 - FireBird - Code Execution Issue

See also: 🔍

Entryinfo

Created: 03/24/2017 16:06
Updated: 10/09/2025 23:16
Changes: 03/24/2017 16:06 (76), 09/13/2020 20:13 (6), 11/15/2022 08:27 (3), 11/15/2022 08:30 (1), 10/09/2025 23:16 (15)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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