[USN-7643-1] libsoup vulnerabilities

[noreply+usn-bot at canonical.com]

==========================================================================
Ubuntu Security Notice USN-7643-1
July 17, 2025

libsoup3, libsoup2.4 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in libsoup.

Software Description:
- libsoup2.4: HTTP client/server library for GNOME
- libsoup3: HTTP client/server library for GNOME

Details:

Jan Różański discovered that libsoup incorrectly handled range headers in
an HTTP request. An attacker could possibly use this issue to cause libsoup
to consume excessive memory, resulting in a denial of service.
(CVE-2025-32907)

Alon Zahavi discovered that libsoup incorrectly handled memory when parsing
HTTP requests. An attacker could possibly use this issue to send a
maliciously crafted HTTP request to the server, causing a denial of service
or obtaining sensitive information. This issue only affected Ubuntu 25.04.
(CVE-2025-32914)

It was discovered that libsoup incorrectly handled memory when parsing
the expiration date of maliciously crafted cookies. An attacker could
possibly use this issue to cause a denial of service. (CVE-2025-4945)

It was discovered that libsoup incorrectly handled integer calculations
when parsing multipart data. An attacker could possibly use this issue to
cause a denial of service. (CVE-2025-4948)

It was discovered that libsoup incorrectly handled buffer reading when
locating boundaries in multipart forms. An attacker could possibly use this
issue to cause a denial of service or obtain sensitive information.
(CVE-2025-4969)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.04
  libsoup-2.4-1                   2.74.3-10ubuntu0.4
  libsoup-3.0-0                   3.6.5-1ubuntu0.2

Ubuntu 24.04 LTS
  libsoup-2.4-1                   2.74.3-6ubuntu1.6
  libsoup-3.0-0                   3.4.4-5ubuntu0.5

Ubuntu 22.04 LTS
  libsoup-3.0-0                   3.0.7-0ubuntu1+esm5
                                  Available with Ubuntu Pro
  libsoup2.4-1                    2.74.2-3ubuntu0.6

Ubuntu 20.04 LTS
  libsoup2.4-1                    2.70.0-1ubuntu0.5+esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libsoup2.4-1                    2.62.1-1ubuntu0.4+esm6
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libsoup2.4-1                    2.52.2-1ubuntu0.3+esm5
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7643-1
  CVE-2025-32907, CVE-2025-32914, CVE-2025-4945, CVE-2025-4948,
  CVE-2025-4969

Package Information:
  https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.3-10ubuntu0.4
  https://launchpad.net/ubuntu/+source/libsoup3/3.6.5-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.3-6ubuntu1.6
  https://launchpad.net/ubuntu/+source/libsoup3/3.4.4-5ubuntu0.5
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