USN-7892-1

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Source
https://ubuntu.com/security/notices/USN-7892-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7892-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7892-1
Upstream
Related
Published
2025-11-26T13:24:12.053150Z
Modified
2025-11-27T07:32:12.338029Z
Summary
h2o vulnerability
Details

It was discovered that H2O exhibited poor server resource management in its HTTP/2 protocol. An attacker could possibly use this issue to cause H2O to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:Pro:20.04:LTS / h2o

Package

Name
h2o
Purl
pkg:deb/ubuntu/h2o@2.2.5+dfsg2-3ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2.5+dfsg2-3ubuntu0.1~esm1

Affected versions

2.*

2.2.5+dfsg2-3
2.2.5+dfsg2-3build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.2.5+dfsg2-3ubuntu0.1~esm1",
            "binary_name": "h2o"
        },
        {
            "binary_version": "2.2.5+dfsg2-3ubuntu0.1~esm1",
            "binary_name": "libh2o-dev"
        },
        {
            "binary_version": "2.2.5+dfsg2-3ubuntu0.1~esm1",
            "binary_name": "libh2o-dev-common"
        },
        {
            "binary_version": "2.2.5+dfsg2-3ubuntu0.1~esm1",
            "binary_name": "libh2o-evloop-dev"
        },
        {
            "binary_version": "2.2.5+dfsg2-3ubuntu0.1~esm1",
            "binary_name": "libh2o-evloop0.13"
        },
        {
            "binary_version": "2.2.5+dfsg2-3ubuntu0.1~esm1",
            "binary_name": "libh2o0.13"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2023-44487",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "high",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:Pro:22.04:LTS / h2o

Package

Name
h2o
Purl
pkg:deb/ubuntu/h2o@2.2.5+dfsg2-6.1ubuntu2+esm1?arch=source&distro=esm-apps/jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.2.5+dfsg2-6.1ubuntu2+esm1

Affected versions

2.*

2.2.5+dfsg2-6
2.2.5+dfsg2-6.1
2.2.5+dfsg2-6.1ubuntu1
2.2.5+dfsg2-6.1ubuntu2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.2.5+dfsg2-6.1ubuntu2+esm1",
            "binary_name": "h2o"
        },
        {
            "binary_version": "2.2.5+dfsg2-6.1ubuntu2+esm1",
            "binary_name": "libh2o-dev"
        },
        {
            "binary_version": "2.2.5+dfsg2-6.1ubuntu2+esm1",
            "binary_name": "libh2o-dev-common"
        },
        {
            "binary_version": "2.2.5+dfsg2-6.1ubuntu2+esm1",
            "binary_name": "libh2o-evloop-dev"
        },
        {
            "binary_version": "2.2.5+dfsg2-6.1ubuntu2+esm1",
            "binary_name": "libh2o-evloop0.13"
        },
        {
            "binary_version": "2.2.5+dfsg2-6.1ubuntu2+esm1",
            "binary_name": "libh2o0.13"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2023-44487",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "high",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}