Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2025-4969: A vulnerability was found in the libsoup package. This flaw stems from its failure to correctly verify the termination of multipart HTTP messages. This can allow a remote attacker to send a specially crafted multipart HTTP body, causing the libsoup-consuming server to read beyond its allocated memory boundaries (out-of-bounds read). CVE-2025-4476: 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.
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | libsoup3 | 0:3.6.5-52.amzn2023 |
| Amazon Linux · 2023 | libsoup3-debuginfo | 0:3.6.5-52.amzn2023 |
| Amazon Linux · 2023 | libsoup3-debugsource | 0:3.6.5-52.amzn2023 |
| Amazon Linux · 2023 | libsoup3-devel | 0:3.6.5-52.amzn2023 |
| Amazon Linux · 2023 | libsoup3-doc | 0:3.6.5-52.amzn2023 |
Vulnerabilities 2
-
Medium 6.5
Libsoup: off-by-one out-of-bounds read in find_boundary() in soup-multipart.c
A vulnerability was found in the libsoup package. This flaw stems from its failure to correctly verify the termination of multipart HTTP messages. This can allow a remote attacker to send a specially crafted multipart HTTP body, causing the libsoup-consuming …
-
Medium 4.3CVE-2025-4476 Public exploit
Libsoup: null pointer dereference in libsoup may lead to denial of service
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-Authentica…