Nixpkgs security tracker
NIXPKGS-2026-1159
GitHub issue
published on
Permalink
CVE-2026-27890
8.2 HIGH
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): LOW
- Availability impact (A): HIGH
by @LeSuisse Activity log
- Created automatic suggestion
- @LeSuisse ignored
- @LeSuisse ignored package firebird-emu
- @LeSuisse accepted
- @LeSuisse published on GitHub
Firebird has Pre-Auth DOS when Processing Out of Order CNCT_specific_data Segments
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when processing CNCT_specific_data segments during authentication, the server assumes segments arrive in strictly ascending order. If segments arrive out of order, the Array class's grow() method computes a negative size value, causing a SIGSEGV crash. An unauthenticated attacker who knows only the server's IP and port can exploit this to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.
References
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https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-6crx-4g37-7j49 x_refsource_CONFIRM
Ignored references (3)
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https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14 x_refsource_MISC
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https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7 x_refsource_MISC
-
https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4 x_refsource_MISC
Affected products
firebird
- ==>= 5.0.0, < 5.0.4
- ==>= 3.0.0, < 3.0.14
- ==>= 4.0.0, < 4.0.7
Matching in nixpkgs
pkgs.firebird
SQL relational database management system
pkgs.firebird_3
SQL relational database management system
Package maintainers
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@MarcWeber Marc Weber <marco-oweber@gmx.de>
-
@bbenno Benno Bielmeier <nix@bbenno.com>