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Ubuntu Security Notice USN-7490-3
May 07, 2025

libsoup3 vulnerabilities
==========================================================================

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in libsoup.

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

Details:

USN-7490-1 fixed vulnerabilities in libsoup2.4. This update provides the
corresponding updates for libsoup3.

Original advisory details:

 Tan Wei Chong discovered that libsoup incorrectly handled memory when
 parsing HTTP request headers. An attacker could possibly use this issue to
 send a maliciously crafted HTTP request to the server, causing a denial of
 service. (CVE-2025-32906)

 Alon Zahavi discovered that libsoup incorrectly parsed video files. An
 attacker could possibly use this issue to send a maliciously crafted HTTP
 response back to the client, causing a denial of service, or leading to
 undefined behavior. (CVE-2025-32909)

 Jan Różański discovered that libsoup incorrectly handled memory when
 parsing authentication headers. An attacker could possibly use this issue
 to send a maliciously crafted HTTP response back to the client, causing a
 denial of service. (CVE-2025-32910, CVE-2025-32912)

 It was discovered that libsoup incorrectly handled data in the hash table
 data type. An attacker could possibly use this issue to send a maliciously
 crafted HTTP request to the server, causing a denial of service or remote
 code execution. (CVE-2025-32911)

 Jan Różański discovered that libsoup incorrectly handled memory when
 parsing the content disposition HTTP header. An attacker could possibly
 use this issue to send maliciously crafted data to a client or server,
 causing a denial of service. (CVE-2025-32913)

 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. (CVE-2025-32914)

 It was discovered that libsoup incorrectly handled memory when parsing
 quality-list headers. An attacker could possibly use this issue to send a
 maliciously crafted HTTP request to the server, causing a denial of
 service. (CVE-2025-46420)

 Jan Różański discovered that libsoup did not strip authorization
 information upon redirects. An attacker could possibly use this issue to
 obtain sensitive information. (CVE-2025-46421)

Update instructions:

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

Ubuntu 24.10
  libsoup-3.0-0                   3.6.0-2ubuntu0.3

Ubuntu 24.04 LTS
  libsoup-3.0-0                   3.4.4-5ubuntu0.3

Ubuntu 22.04 LTS
  libsoup-3.0-0                   3.0.7-0ubuntu1+esm3
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7490-3
  https://ubuntu.com/security/notices/USN-7490-2
  https://ubuntu.com/security/notices/USN-7490-1
  CVE-2025-32906, CVE-2025-32909, CVE-2025-32910, CVE-2025-32911,
  CVE-2025-32912, CVE-2025-32913, CVE-2025-32914, CVE-2025-46420,
  CVE-2025-46421

Package Information:
  https://launchpad.net/ubuntu/+source/libsoup3/3.6.0-2ubuntu0.3
  https://launchpad.net/ubuntu/+source/libsoup3/3.4.4-5ubuntu0.3