UBUNTU-CVE-2025-53859

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Source
https://ubuntu.com/security/CVE-2025-53859
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-53859.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-53859
Upstream
Downstream
Related
Published
2025-08-15T00:00:00Z
Modified
2025-09-08T17:11:58Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

NGINX Open Source and NGINX Plus have a vulnerability in the ngxmailsmtpmodule that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue happens during the NGINX SMTP authentication process and requires the attacker to make preparations against the target system to extract the leaked data. The issue affects NGINX only if (1) it is built with the ngxmailsmtpmodule, (2) the smtp_auth directive is configured with method "none," and (3) the authentication server returns the "Auth-Wait" response header. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References

Affected packages

Ubuntu:Pro:14.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.4.6-1ubuntu3.9+esm5?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

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

Affected versions

1.*

1.4.1-3ubuntu1
1.4.3-2ubuntu1
1.4.4-1ubuntu1
1.4.4-2ubuntu1
1.4.4-4ubuntu1
1.4.5-1ubuntu1
1.4.6-1ubuntu2
1.4.6-1ubuntu3
1.4.6-1ubuntu3.1
1.4.6-1ubuntu3.2
1.4.6-1ubuntu3.3
1.4.6-1ubuntu3.4
1.4.6-1ubuntu3.5
1.4.6-1ubuntu3.6
1.4.6-1ubuntu3.7
1.4.6-1ubuntu3.8
1.4.6-1ubuntu3.9
1.4.6-1ubuntu3.9+esm1
1.4.6-1ubuntu3.9+esm2
1.4.6-1ubuntu3.9+esm3
1.4.6-1ubuntu3.9+esm4
1.4.6-1ubuntu3.9+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nginx",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        },
        {
            "binary_name": "nginx-naxsi",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        },
        {
            "binary_name": "nginx-naxsi-ui",
            "binary_version": "1.4.6-1ubuntu3.9+esm5"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.10.3-0ubuntu0.16.04.5+esm6?arch=source&distro=esm-infra/xenial

Affected ranges

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

Affected versions

1.*

1.9.3-1ubuntu1
1.9.6-2ubuntu1
1.9.6-2ubuntu2
1.9.9-0ubuntu1
1.9.9-1ubuntu1
1.9.10-0ubuntu1
1.9.10-1ubuntu1
1.9.11-0ubuntu1
1.9.11-0ubuntu2
1.9.12-0ubuntu1
1.9.13-0ubuntu1
1.9.14-0ubuntu1
1.9.15-0ubuntu1
1.10.0-0ubuntu0.16.04.1
1.10.0-0ubuntu0.16.04.2
1.10.0-0ubuntu0.16.04.3
1.10.0-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.1
1.10.3-0ubuntu0.16.04.2
1.10.3-0ubuntu0.16.04.3
1.10.3-0ubuntu0.16.04.4
1.10.3-0ubuntu0.16.04.5
1.10.3-0ubuntu0.16.04.5+esm1
1.10.3-0ubuntu0.16.04.5+esm2
1.10.3-0ubuntu0.16.04.5+esm3
1.10.3-0ubuntu0.16.04.5+esm4
1.10.3-0ubuntu0.16.04.5+esm5
1.10.3-0ubuntu0.16.04.5+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "nginx",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm6"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm6"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm6"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm6"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm6"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.10.3-0ubuntu0.16.04.5+esm6"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.14.0-0ubuntu1.11+esm1?arch=source&distro=esm-infra/bionic

Affected ranges

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

Affected versions

1.*

1.12.1-0ubuntu2
1.13.6-2ubuntu1
1.13.6-2ubuntu2
1.13.10-1ubuntu1
1.13.12-0ubuntu1
1.14.0-0ubuntu1
1.14.0-0ubuntu1.1
1.14.0-0ubuntu1.2
1.14.0-0ubuntu1.3
1.14.0-0ubuntu1.4
1.14.0-0ubuntu1.5
1.14.0-0ubuntu1.6
1.14.0-0ubuntu1.7
1.14.0-0ubuntu1.9
1.14.0-0ubuntu1.10
1.14.0-0ubuntu1.11
1.14.0-0ubuntu1.11+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnginx-mod-http-auth-pam",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-cache-purge",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-dav-ext",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-echo",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-fancyindex",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-geoip",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-headers-more-filter",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-image-filter",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-lua",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-ndk",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-perl",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-subs-filter",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-uploadprogress",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-upstream-fair",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-http-xslt-filter",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-mail",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-nchan",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-rtmp",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "libnginx-mod-stream",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "nginx",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.14.0-0ubuntu1.11+esm1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.18.0-0ubuntu1.7?arch=source&distro=esm-infra/focal

Affected ranges

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

Affected versions

1.*

1.16.1-0ubuntu2
1.16.1-0ubuntu3
1.17.5-0ubuntu1
1.17.6-0ubuntu1
1.17.7-0ubuntu1
1.17.8-0ubuntu1
1.17.8-0ubuntu2
1.17.8-0ubuntu3
1.17.9-0ubuntu1
1.17.9-0ubuntu2
1.17.9-0ubuntu3
1.17.10-0ubuntu1
1.18.0-0ubuntu1
1.18.0-0ubuntu1.2
1.18.0-0ubuntu1.3
1.18.0-0ubuntu1.4
1.18.0-0ubuntu1.5
1.18.0-0ubuntu1.6
1.18.0-0ubuntu1.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnginx-mod-http-auth-pam",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-cache-purge",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-dav-ext",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-echo",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-fancyindex",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-geoip",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-geoip2",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-headers-more-filter",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-image-filter",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-lua",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-ndk",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-perl",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-subs-filter",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-uploadprogress",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-upstream-fair",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-http-xslt-filter",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-mail",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-nchan",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-rtmp",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "libnginx-mod-stream",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "nginx",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.18.0-0ubuntu1.7"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.18.0-0ubuntu1.7"
        }
    ]
}

Ubuntu:22.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.18.0-6ubuntu14.7?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.18.0-6ubuntu14.7

Affected versions

1.*

1.18.0-6ubuntu11
1.18.0-6ubuntu12
1.18.0-6ubuntu14
1.18.0-6ubuntu14.1
1.18.0-6ubuntu14.2
1.18.0-6ubuntu14.3
1.18.0-6ubuntu14.4
1.18.0-6ubuntu14.5
1.18.0-6ubuntu14.6

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnginx-mod-http-auth-pam",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-cache-purge",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-dav-ext",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-echo",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-fancyindex",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-geoip",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-geoip2",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-headers-more-filter",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-image-filter",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-ndk",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-perl",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-subs-filter",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-uploadprogress",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-upstream-fair",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-http-xslt-filter",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-mail",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-nchan",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-rtmp",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-stream",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-stream-geoip",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "libnginx-mod-stream-geoip2",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "nginx",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.18.0-6ubuntu14.7"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.18.0-6ubuntu14.7"
        }
    ]
}

Ubuntu:24.04:LTS / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.24.0-2ubuntu7.5?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.24.0-2ubuntu7.5

Affected versions

1.*

1.24.0-1ubuntu1
1.24.0-2ubuntu1
1.24.0-2ubuntu2
1.24.0-2ubuntu3
1.24.0-2ubuntu4
1.24.0-2ubuntu6
1.24.0-2ubuntu7
1.24.0-2ubuntu7.1
1.24.0-2ubuntu7.3
1.24.0-2ubuntu7.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnginx-mod-http-geoip",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "libnginx-mod-http-image-filter",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "libnginx-mod-http-perl",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "libnginx-mod-http-xslt-filter",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "libnginx-mod-mail",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "libnginx-mod-stream",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "libnginx-mod-stream-geoip",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "nginx",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "nginx-common",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "nginx-core",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "nginx-dev",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "nginx-extras",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "nginx-full",
            "binary_version": "1.24.0-2ubuntu7.5"
        },
        {
            "binary_name": "nginx-light",
            "binary_version": "1.24.0-2ubuntu7.5"
        }
    ]
}

Ubuntu:25.04 / nginx

Package

Name
nginx
Purl
pkg:deb/ubuntu/nginx@1.26.3-2ubuntu1.2?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.26.3-2ubuntu1.2

Affected versions

1.*

1.26.0-2ubuntu3
1.26.0-3ubuntu1
1.26.3-2ubuntu1
1.26.3-2ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libnginx-mod-http-geoip",
            "binary_version": "1.26.3-2ubuntu1.2"
        },
        {
            "binary_name": "libnginx-mod-http-image-filter",
            "binary_version": "1.26.3-2ubuntu1.2"
        },
        {
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