UBUNTU-CVE-2021-40540

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Source
https://ubuntu.com/security/CVE-2021-40540
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40540.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-40540
Upstream
Published
2021-09-07T02:15:00Z
Modified
2025-10-24T04:50:34Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

ulfiusurilogger in Ulfius HTTP Framework before 2.7.4 omits coninfo initialization and a coninfo->request NULL check for certain malformed HTTP requests.

References

Affected packages

Ubuntu:18.04:LTS / ulfius

Package

Name
ulfius
Purl
pkg:deb/ubuntu/ulfius@2.2.4-1?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*

2.1.0-1
2.1.2-1
2.2.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libulfius-dev",
            "binary_version": "2.2.4-1"
        },
        {
            "binary_name": "libulfius2.2",
            "binary_version": "2.2.4-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40540.json"

Ubuntu:20.04:LTS / ulfius

Package

Name
ulfius
Purl
pkg:deb/ubuntu/ulfius@2.5.2-4?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*

2.5.2-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libulfius-dev",
            "binary_version": "2.5.2-4"
        },
        {
            "binary_name": "libulfius2.5",
            "binary_version": "2.5.2-4"
        },
        {
            "binary_name": "uwsc",
            "binary_version": "2.5.2-4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40540.json"

Ubuntu:22.04:LTS / ulfius

Package

Name
ulfius
Purl
pkg:deb/ubuntu/ulfius@2.7.7-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*

2.7.4-1ubuntu3
2.7.6-1ubuntu1
2.7.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libulfius-dev",
            "binary_version": "2.7.7-1"
        },
        {
            "binary_name": "libulfius2.7",
            "binary_version": "2.7.7-1"
        },
        {
            "binary_name": "uwsc",
            "binary_version": "2.7.7-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40540.json"