UBUNTU-CVE-2025-12642

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Source
https://ubuntu.com/security/CVE-2025-12642
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-12642
Upstream
Published
2025-11-03T20:17:00Z
Modified
2026-01-20T19:01:10.422470Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N CVSS Calculator
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to: * Bypass access control rules * Inject unsafe input into backend logic that trusts request headers * Execute HTTP Request Smuggling attacks under some conditions This issue affects lighttpd1.4.80

References

Affected packages

Ubuntu:20.04:LTS
lighttpd

Package

Name
lighttpd
Purl
pkg:deb/ubuntu/lighttpd@1.4.55-1ubuntu1.20.04.2?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.4.53-4ubuntu2
1.4.54-2ubuntu1
1.4.55-1ubuntu1
1.4.55-1ubuntu1.20.04.1
1.4.55-1ubuntu1.20.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "lighttpd",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-dev",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-authn-gssapi",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-authn-pam",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-authn-sasl",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-cml",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-geoip",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-magnet",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-maxminddb",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-trigger-b4-dl",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-vhostdb-dbi",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-vhostdb-pgsql",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-modules-ldap",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        },
        {
            "binary_name": "lighttpd-modules-mysql",
            "binary_version": "1.4.55-1ubuntu1.20.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json"
Ubuntu:22.04:LTS
lighttpd

Package

Name
lighttpd
Purl
pkg:deb/ubuntu/lighttpd@1.4.63-1ubuntu3.1?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.4.59-1ubuntu2
1.4.59-1ubuntu3
1.4.63-1ubuntu1
1.4.63-1ubuntu2
1.4.63-1ubuntu3
1.4.63-1ubuntu3.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "lighttpd",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-authn-gssapi",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-authn-pam",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-authn-sasl",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-deflate",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-geoip",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-maxminddb",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-mbedtls",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-nss",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-openssl",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-trigger-b4-dl",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-vhostdb-pgsql",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-mod-wolfssl",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-modules-dbi",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-modules-ldap",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-modules-lua",
            "binary_version": "1.4.63-1ubuntu3.1"
        },
        {
            "binary_name": "lighttpd-modules-mysql",
            "binary_version": "1.4.63-1ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json"
Ubuntu:24.04:LTS
lighttpd

Package

Name
lighttpd
Purl
pkg:deb/ubuntu/lighttpd@1.4.74-1ubuntu3?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.4.69-1ubuntu1
1.4.69-1ubuntu2
1.4.73-1ubuntu1
1.4.73-1ubuntu2
1.4.74-1ubuntu2
1.4.74-1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "lighttpd",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-authn-gssapi",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-authn-pam",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-authn-sasl",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-deflate",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-gnutls",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-maxminddb",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-mbedtls",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-nss",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-openssl",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-vhostdb-pgsql",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-mod-wolfssl",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-modules-dbi",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-modules-ldap",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-modules-lua",
            "binary_version": "1.4.74-1ubuntu3"
        },
        {
            "binary_name": "lighttpd-modules-mysql",
            "binary_version": "1.4.74-1ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json"
Ubuntu:25.10
lighttpd

Package

Name
lighttpd
Purl
pkg:deb/ubuntu/lighttpd@1.4.82-2ubuntu1?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.4.79-1ubuntu1
1.4.79-2ubuntu1
1.4.82-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "lighttpd",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-authn-gssapi",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-authn-pam",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-authn-sasl",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-deflate",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-gnutls",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-maxminddb",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-mbedtls",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-nss",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-openssl",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-vhostdb-pgsql",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-mod-wolfssl",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-modules-dbi",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-modules-ldap",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-modules-lua",
            "binary_version": "1.4.82-2ubuntu1"
        },
        {
            "binary_name": "lighttpd-modules-mysql",
            "binary_version": "1.4.82-2ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json"
Ubuntu:Pro:14.04:LTS
lighttpd

Package

Name
lighttpd
Purl
pkg:deb/ubuntu/lighttpd@1.4.33-1+nmu2ubuntu2.1+esm1?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

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

Affected versions

1.*
1.4.31-3ubuntu3
1.4.33-1ubuntu1
1.4.33-1+nmu2ubuntu1
1.4.33-1+nmu2ubuntu2
1.4.33-1+nmu2ubuntu2.1
1.4.33-1+nmu2ubuntu2.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "lighttpd",
            "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-dev",
            "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-cml",
            "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-magnet",
            "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-mysql-vhost",
            "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-trigger-b4-dl",
            "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.33-1+nmu2ubuntu2.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json"
Ubuntu:Pro:16.04:LTS
lighttpd

Package

Name
lighttpd
Purl
pkg:deb/ubuntu/lighttpd@1.4.35-4ubuntu2.1+esm1?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

1.*
1.4.35-4ubuntu1
1.4.35-4ubuntu2
1.4.35-4ubuntu2.1
1.4.35-4ubuntu2.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "lighttpd",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-dev",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-cml",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-magnet",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-mysql-vhost",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-trigger-b4-dl",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.35-4ubuntu2.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json"
Ubuntu:Pro:18.04:LTS
lighttpd

Package

Name
lighttpd
Purl
pkg:deb/ubuntu/lighttpd@1.4.45-1ubuntu3.18.04.1+esm1?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

1.*
1.4.45-1ubuntu1
1.4.45-1ubuntu3
1.4.45-1ubuntu3+esm1
1.4.45-1ubuntu3.18.04
1.4.45-1ubuntu3.18.04+esm1
1.4.45-1ubuntu3.18.04.1
1.4.45-1ubuntu3.18.04.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "lighttpd",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-dev",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-authn-gssapi",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-authn-ldap",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-authn-mysql",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-cml",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-geoip",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-magnet",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-mysql-vhost",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-trigger-b4-dl",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        },
        {
            "binary_name": "lighttpd-mod-webdav",
            "binary_version": "1.4.45-1ubuntu3.18.04.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-12642.json"