UBUNTU-CVE-2025-4476

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Source
https://ubuntu.com/security/CVE-2025-4476
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-4476.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-4476
Related
Published
2025-05-19T00:00:00Z
Modified
2025-05-19T04:32:27Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

A denial-of-service vulnerability has been identified in the libsoup HTTP client library. This flaw can be triggered when a libsoup client receives a 401 (Unauthorized) HTTP response containing a specifically crafted domain parameter within the WWW-Authenticate header. Processing this malformed header can lead to a crash of the client application using libsoup. An attacker could exploit this by setting up a malicious HTTP server. If a user's application using the vulnerable libsoup library connects to this malicious server, it could result in a denial-of-service. Successful exploitation requires tricking a user's client application into connecting to the attacker's malicious server.

References

Affected packages

Ubuntu:22.04:LTS / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3@3.0.7-0ubuntu1?arch=source&distro=jammy

Affected ranges

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

Affected versions

3.*

3.0.4-2
3.0.4-3
3.0.5-1
3.0.7-0ubuntu1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.10 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3@3.6.0-2ubuntu0.3?arch=source&distro=oracular

Affected ranges

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

Affected versions

3.*

3.4.4-5build2
3.5.2-1
3.6.0-1
3.6.0-2
3.6.0-2ubuntu0.1
3.6.0-2ubuntu0.2
3.6.0-2ubuntu0.3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3@3.4.4-5ubuntu0.3?arch=source&distro=noble

Affected ranges

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

Affected versions

3.*

3.4.2-4
3.4.4-1
3.4.4-2
3.4.4-4
3.4.4-5
3.4.4-5build1
3.4.4-5build2
3.4.4-5ubuntu0.1
3.4.4-5ubuntu0.2
3.4.4-5ubuntu0.3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:25.04 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/ubuntu/libsoup3@3.6.5-1?arch=source&distro=plucky

Affected ranges

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

Affected versions

3.*

3.6.0-2
3.6.0-3
3.6.0-4
3.6.1-1
3.6.4-1
3.6.4-2
3.6.4-3
3.6.5-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}