UBUNTU-CVE-2025-11678

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Source
https://ubuntu.com/security/CVE-2025-11678
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11678.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-11678
Upstream
  • CVE-2025-11678
Downstream
Related
Published
2025-10-20T14:15:00Z
Modified
2026-04-22T15:29:59Z
Severity
  • 7.5 (High) CVSS_V4 - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Stack-based Buffer Overflow in lws_adns_parse_label in warmcat libwebsockets allows, when the LWS_WITH_SYS_ASYNC_DNS flag is enabled during compilation, to overflow the label_stack, when the attacker is able to sniff a DNS request in order to craft a response with a matching id containing a label longer than the maximum.

References

Affected packages

Ubuntu:22.04:LTS / libwebsockets

Package

Name
libwebsockets
Purl
pkg:deb/ubuntu/libwebsockets@4.0.20-2ubuntu1.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.0.20-2ubuntu1.1

Affected versions

4.*
4.0.20-2
4.0.20-2ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.0.20-2ubuntu1.1"
        },
        {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.0.20-2ubuntu1.1"
        },
        {
            "binary_name": "libwebsockets16",
            "binary_version": "4.0.20-2ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11678.json"

Ubuntu:Pro:24.04:LTS / libwebsockets

Package

Name
libwebsockets
Purl
pkg:deb/ubuntu/libwebsockets@4.3.3-1.1ubuntu0.1~esm1?arch=source&distro=esm-apps/noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.3.3-1.1ubuntu0.1~esm1

Affected versions

4.*
4.3.2-4
4.3.3-1
4.3.3-1.1build1
4.3.3-1.1build2
4.3.3-1.1build3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libwebsockets-evlib-ev",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libwebsockets-evlib-glib",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libwebsockets-evlib-uv",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libwebsockets19t64",
            "binary_version": "4.3.3-1.1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11678.json"

Ubuntu:25.10 / libwebsockets

Package

Name
libwebsockets
Purl
pkg:deb/ubuntu/libwebsockets@4.3.5-1?arch=source&distro=questing

Affected ranges

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

Affected versions

4.*
4.3.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libwebsockets-evlib-ev",
            "binary_version": "4.3.5-1"
        },
        {
            "binary_name": "libwebsockets-evlib-glib",
            "binary_version": "4.3.5-1"
        },
        {
            "binary_name": "libwebsockets-evlib-uv",
            "binary_version": "4.3.5-1"
        },
        {
            "binary_name": "libwebsockets-test-server",
            "binary_version": "4.3.5-1"
        },
        {
            "binary_name": "libwebsockets-test-server-common",
            "binary_version": "4.3.5-1"
        },
        {
            "binary_name": "libwebsockets19t64",
            "binary_version": "4.3.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-11678.json"