UBUNTU-CVE-2026-27890

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Source
https://ubuntu.com/security/CVE-2026-27890
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-27890
Upstream
Published
2026-04-17T19:16:00Z
Modified
2026-05-20T16:24:53Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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

Affected packages

Ubuntu:18.04:LTS
firebird3.0

Package

Name
firebird3.0
Purl
pkg:deb/ubuntu/firebird3.0?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.2.32703.ds4-9
3.0.2.32703.ds4-11ubuntu1
3.0.2.32703.ds4-11ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird3.0-common",
            "binary_version": "3.0.2.32703.ds4-11ubuntu2"
        },
        {
            "binary_name": "firebird3.0-examples",
            "binary_version": "3.0.2.32703.ds4-11ubuntu2"
        },
        {
            "binary_name": "firebird3.0-server",
            "binary_version": "3.0.2.32703.ds4-11ubuntu2"
        },
        {
            "binary_name": "firebird3.0-server-core",
            "binary_version": "3.0.2.32703.ds4-11ubuntu2"
        },
        {
            "binary_name": "firebird3.0-utils",
            "binary_version": "3.0.2.32703.ds4-11ubuntu2"
        },
        {
            "binary_name": "libfbclient2",
            "binary_version": "3.0.2.32703.ds4-11ubuntu2"
        },
        {
            "binary_name": "libib-util",
            "binary_version": "3.0.2.32703.ds4-11ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"
Ubuntu:20.04:LTS
firebird3.0

Package

Name
firebird3.0
Purl
pkg:deb/ubuntu/firebird3.0?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.5.33100.ds4-3
3.0.5.33189.ds4-1
3.0.5.33209.ds4-1
3.0.5.33220.ds4-1
3.0.5.33220.ds4-1build1
3.0.5.33220.ds4-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird3.0-common",
            "binary_version": "3.0.5.33220.ds4-1build2"
        },
        {
            "binary_name": "firebird3.0-examples",
            "binary_version": "3.0.5.33220.ds4-1build2"
        },
        {
            "binary_name": "firebird3.0-server",
            "binary_version": "3.0.5.33220.ds4-1build2"
        },
        {
            "binary_name": "firebird3.0-server-core",
            "binary_version": "3.0.5.33220.ds4-1build2"
        },
        {
            "binary_name": "firebird3.0-utils",
            "binary_version": "3.0.5.33220.ds4-1build2"
        },
        {
            "binary_name": "libfbclient2",
            "binary_version": "3.0.5.33220.ds4-1build2"
        },
        {
            "binary_name": "libib-util",
            "binary_version": "3.0.5.33220.ds4-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"
Ubuntu:22.04:LTS
firebird3.0

Package

Name
firebird3.0
Purl
pkg:deb/ubuntu/firebird3.0?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.7.33374.ds4-2
3.0.8.33535.ds4-1ubuntu1
3.0.8.33535.ds4-1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird3.0-common",
            "binary_version": "3.0.8.33535.ds4-1ubuntu2"
        },
        {
            "binary_name": "firebird3.0-examples",
            "binary_version": "3.0.8.33535.ds4-1ubuntu2"
        },
        {
            "binary_name": "firebird3.0-server",
            "binary_version": "3.0.8.33535.ds4-1ubuntu2"
        },
        {
            "binary_name": "firebird3.0-server-core",
            "binary_version": "3.0.8.33535.ds4-1ubuntu2"
        },
        {
            "binary_name": "firebird3.0-utils",
            "binary_version": "3.0.8.33535.ds4-1ubuntu2"
        },
        {
            "binary_name": "libfbclient2",
            "binary_version": "3.0.8.33535.ds4-1ubuntu2"
        },
        {
            "binary_name": "libib-util",
            "binary_version": "3.0.8.33535.ds4-1ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"
Ubuntu:24.04:LTS
firebird3.0

Package

Name
firebird3.0
Purl
pkg:deb/ubuntu/firebird3.0?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.11.33637.ds4-2ubuntu1
3.0.11.33637.ds4-2ubuntu2
3.0.11.33703.ds4-2ubuntu1
3.0.11.33703.ds4-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird3.0-common",
            "binary_version": "3.0.11.33703.ds4-2ubuntu2"
        },
        {
            "binary_name": "firebird3.0-examples",
            "binary_version": "3.0.11.33703.ds4-2ubuntu2"
        },
        {
            "binary_name": "firebird3.0-server",
            "binary_version": "3.0.11.33703.ds4-2ubuntu2"
        },
        {
            "binary_name": "firebird3.0-server-core",
            "binary_version": "3.0.11.33703.ds4-2ubuntu2"
        },
        {
            "binary_name": "firebird3.0-utils",
            "binary_version": "3.0.11.33703.ds4-2ubuntu2"
        },
        {
            "binary_name": "libfbclient2",
            "binary_version": "3.0.11.33703.ds4-2ubuntu2"
        },
        {
            "binary_name": "libib-util",
            "binary_version": "3.0.11.33703.ds4-2ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"
Ubuntu:25.10
firebird3.0

Package

Name
firebird3.0
Purl
pkg:deb/ubuntu/firebird3.0?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.12.ds7-12

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird3.0-common",
            "binary_version": "3.0.12.ds7-12"
        },
        {
            "binary_name": "firebird3.0-examples",
            "binary_version": "3.0.12.ds7-12"
        },
        {
            "binary_name": "firebird3.0-server",
            "binary_version": "3.0.12.ds7-12"
        },
        {
            "binary_name": "firebird3.0-server-core",
            "binary_version": "3.0.12.ds7-12"
        },
        {
            "binary_name": "firebird3.0-utils",
            "binary_version": "3.0.12.ds7-12"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"
firebird4.0

Package

Name
firebird4.0
Purl
pkg:deb/ubuntu/firebird4.0?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.0.5.3140.ds6-16
4.0.5.3140.ds6-17
4.0.6.3221.ds6-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird-utils",
            "binary_version": "4.0.6.3221.ds6-2"
        },
        {
            "binary_name": "firebird4.0-common",
            "binary_version": "4.0.6.3221.ds6-2"
        },
        {
            "binary_name": "firebird4.0-examples",
            "binary_version": "4.0.6.3221.ds6-2"
        },
        {
            "binary_name": "firebird4.0-server",
            "binary_version": "4.0.6.3221.ds6-2"
        },
        {
            "binary_name": "firebird4.0-server-core",
            "binary_version": "4.0.6.3221.ds6-2"
        },
        {
            "binary_name": "firebird4.0-utils",
            "binary_version": "4.0.6.3221.ds6-2"
        },
        {
            "binary_name": "libfbclient2",
            "binary_version": "4.0.6.3221.ds6-2"
        },
        {
            "binary_name": "libib-util",
            "binary_version": "4.0.6.3221.ds6-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"
Ubuntu:26.04:LTS
firebird3.0

Package

Name
firebird3.0
Purl
pkg:deb/ubuntu/firebird3.0?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.12.ds7-12
3.0.13.ds7-2
3.0.13.ds7-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird3.0-common",
            "binary_version": "3.0.13.ds7-2build1"
        },
        {
            "binary_name": "firebird3.0-examples",
            "binary_version": "3.0.13.ds7-2build1"
        },
        {
            "binary_name": "firebird3.0-server",
            "binary_version": "3.0.13.ds7-2build1"
        },
        {
            "binary_name": "firebird3.0-server-core",
            "binary_version": "3.0.13.ds7-2build1"
        },
        {
            "binary_name": "firebird3.0-utils",
            "binary_version": "3.0.13.ds7-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"
firebird4.0

Package

Name
firebird4.0
Purl
pkg:deb/ubuntu/firebird4.0?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.0.6.3221.ds6-2
4.0.6.3221.ds6-2build1
4.0.6.3221.ds6-2build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firebird-utils",
            "binary_version": "4.0.6.3221.ds6-2build2"
        },
        {
            "binary_name": "firebird4.0-common",
            "binary_version": "4.0.6.3221.ds6-2build2"
        },
        {
            "binary_name": "firebird4.0-examples",
            "binary_version": "4.0.6.3221.ds6-2build2"
        },
        {
            "binary_name": "firebird4.0-server",
            "binary_version": "4.0.6.3221.ds6-2build2"
        },
        {
            "binary_name": "firebird4.0-server-core",
            "binary_version": "4.0.6.3221.ds6-2build2"
        },
        {
            "binary_name": "firebird4.0-utils",
            "binary_version": "4.0.6.3221.ds6-2build2"
        },
        {
            "binary_name": "libfbclient2",
            "binary_version": "4.0.6.3221.ds6-2build2"
        },
        {
            "binary_name": "libib-util",
            "binary_version": "4.0.6.3221.ds6-2build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27890.json"