USN-8624-1

It was discovered that Sinatra did not properly handle header parsing, causing ETag generation to hang when given specific input. A remote attacker could possibly use this issue to cause a denial of service.

References

Affected packages

Ubuntu:Pro:16.04:LTS / ruby-sinatra

Package

Name: ruby-sinatra
Purl: pkg:deb/ubuntu/ruby-sinatra?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.4.7-3ubuntu0.1~esm3

Affected versions

1.*

1.4.6-2

1.4.7-3

1.4.7-3ubuntu0.1~esm2

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-sinatra",
            "binary_version": "1.4.7-3ubuntu0.1~esm3"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2025-61921"
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8624-1.json"

Ubuntu:Pro:18.04:LTS / ruby-sinatra

Package

Name: ruby-sinatra
Purl: pkg:deb/ubuntu/ruby-sinatra?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.4.8-1ubuntu0.1~esm3

Affected versions

1.*

1.4.7-5

1.4.8-1

1.4.8-1ubuntu0.1~esm2

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-sinatra",
            "binary_version": "1.4.8-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2025-61921"
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8624-1.json"

Ubuntu:Pro:20.04:LTS / ruby-sinatra

Package

Name: ruby-sinatra
Purl: pkg:deb/ubuntu/ruby-sinatra?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.0.8.1-1ubuntu0.1~esm3

Affected versions

2.*

2.0.5-4ubuntu1

2.0.8.1-1

2.0.8.1-1ubuntu0.1~esm2

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-rack-protection",
            "binary_version": "2.0.8.1-1ubuntu0.1~esm3"
        },
        {
            "binary_name": "ruby-sinatra",
            "binary_version": "2.0.8.1-1ubuntu0.1~esm3"
        },
        {
            "binary_name": "ruby-sinatra-contrib",
            "binary_version": "2.0.8.1-1ubuntu0.1~esm3"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2025-61921"
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8624-1.json"

Ubuntu:Pro:22.04:LTS / ruby-sinatra

Package

Name: ruby-sinatra
Purl: pkg:deb/ubuntu/ruby-sinatra?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.0.8.1-2+deb11u1ubuntu0.1~esm1

Affected versions

2.*

2.0.8.1-2

2.0.8.1-2+deb11u1build0.22.04.1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-rack-protection",
            "binary_version": "2.0.8.1-2+deb11u1ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-sinatra",
            "binary_version": "2.0.8.1-2+deb11u1ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-sinatra-contrib",
            "binary_version": "2.0.8.1-2+deb11u1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2025-61921"
        }
    ],
    "ecosystem": "Ubuntu:Pro:22.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8624-1.json"