[USN-7490-2] libsoup regression

[Hlib Korzhynskyy]

==========================================================================
Ubuntu Security Notice USN-7490-2
May 06, 2025

libsoup2.4 regression
==========================================================================

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

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

USN-7490-1 introduced a regression in libsoup.

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

Details:

USN-7490-1 fixed vulnerabilities in libsoup. It was discovered that the fix
for CVE-2025-32912 was incomplete. This update fixes the problem.

We apologize for the inconvenience.

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 25.04
   libsoup-2.4-1                   2.74.3-10ubuntu0.2

Ubuntu 24.10
   libsoup-2.4-1                   2.74.3-7ubuntu0.4

Ubuntu 24.04 LTS
   libsoup-2.4-1                   2.74.3-6ubuntu1.4

Ubuntu 22.04 LTS
   libsoup2.4-1                    2.74.2-3ubuntu0.4

Ubuntu 20.04 LTS
   libsoup2.4-1                    2.70.0-1ubuntu0.4

Ubuntu 18.04 LTS
   libsoup2.4-1                    2.62.1-1ubuntu0.4+esm3
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   libsoup2.4-1                    2.52.2-1ubuntu0.3+esm2
                                   Available with Ubuntu Pro

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

References:
   https://ubuntu.com/security/notices/USN-7490-2
   https://ubuntu.com/security/notices/USN-7490-1
   CVE-2025-32912, https://launchpad.net/bugs/2110056

Package Information:
https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.3-10ubuntu0.2
https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.3-7ubuntu0.4
https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.3-6ubuntu1.4
https://launchpad.net/ubuntu/+source/libsoup2.4/2.74.2-3ubuntu0.4
https://launchpad.net/ubuntu/+source/libsoup2.4/2.70.0-1ubuntu0.4

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