vulnerability

Amazon Linux 2023: CVE-2025-4476: Medium priority package update for libsoup3

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
May 8, 2025
Added
Oct 28, 2025
Modified
Oct 28, 2025

Description

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.

Solutions

amazon-linux-2023-upgrade-libsoup3amazon-linux-2023-upgrade-libsoup3-debuginfoamazon-linux-2023-upgrade-libsoup3-debugsourceamazon-linux-2023-upgrade-libsoup3-develamazon-linux-2023-upgrade-libsoup3-doc
Title
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