TI-2023-21664 Aliases CVE-2023-41038

Server crash when using specific form of SET BIND statement

MEDIUM 40CWE-770Published 2024-03-20 · Updated 2024-08-13

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

Firebird is a relational database. Versions 4.0.0 through 4.0.3 and version 5.0 beta1 are vulnerable to a server crash when a user uses a specific form of SET BIND statement. Any non-privileged user with minimum access to a server may type a statement with a long `CHAR` length, which causes the server to crash due to stack corruption. Versions 4.0.4.2981 and 5.0.0.117 contain fixes for this issue. No known workarounds are available.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00658 51st percentileScored 2026-11-07

Fix Fixed firebird (FirebirdSQL): 4.0.4.2981

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
FirebirdSQL	firebird	4.0.0 to before 4.0.4.2981; >= 5.0 beta1, < 5.0.0.1176	4.0.4.2981	Patch available	CNA

firebird VendorFirebirdSQL Affected 4.0.0 to before 4.0.4.2981; >= 5.0 beta1, < 5.0.0.1176 Fixed in 4.0.4.2981 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:firebirdsql:firebird::::::::	4.0.0 – 4.0.3	Vulnerable	FirebirdSQL
cpe:2.3:a:firebirdsql:firebird:5.0:beta1::::::	5.0 beta1	Vulnerable	FirebirdSQL

cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:* Versions 4.0.0 – 4.0.3 Vulnerable ·FirebirdSQL
cpe:2.3:a:firebirdsql:firebird:5.0:beta1:*:*:*:*:*:* Versions 5.0 beta1 Vulnerable ·FirebirdSQL

Remediation

Fix · CNA firebird (FirebirdSQL) Fixed in 4.0.4.2981

Timeline

2026-10-02 Threatist record created from CVE-2023-41038
2026-10-09 EPSS moved to the 50th–90th percentile

References

Advisory 1

https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-6fv8-8rwr-9692

Other 1

https://firebirdsql.org/en/snapshot-builds

TI-2026-22559 Firebird Null Pointer Dereference via CryptCallback causes DOS CVSS 3.1HIGH 8.2
TI-2026-22234 Firebird has Pre-Auth DOS when Processing Out of Order CNCT_specific_data Segments CVSS 3.1HIGH 8.2
TI-2026-27368 Firebird: DoS via malicious slice descriptor in slice packet CVSS 3.1HIGH 7.5
TI-2026-26527 Firebird: DoS via `op_response` packet from client CVSS 3.1HIGH 7.5
TI-2026-25747 Firebird has a buffer overflow when parsing corrupted slice packets CVSS 3.1HIGH 7.5
TI-2026-22547 Firebird has potential server crash via null pointer dereference when processing op_slice packet CVSS 3.1HIGH 7.5

See all 45 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences