CVE-2025-32052
Description
A flaw was found in libsoup. A vulnerability in the sniff_unknown() function may lead to heap buffer over-read.
Statement
A moderate severity heap buffer over-read flaw was found in the libsoup content sniffer, in the sniff_unknown() function of soup-content-sniffer.c. A remote attacker who controls an HTTP server can send a crafted HTTP response to a client application using libsoup, causing the content sniffer to read beyond the bounds of a heap-allocated buffer when determining the content type. This out-of-bounds read can lead to disclosure of information from process memory or cause the client application to crash, consistent with the Red Hat severity rating of Moderate (CVSS 6.5, CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L), which matches the upstream rating. Red Hat Enterprise Linux 8 and 9 (libsoup), Red Hat In-Vehicle OS (libsoup), and products shipping the mingw-libsoup variant are affected, and a fix is being pursued through the respective product streams. Red Hat Enterprise Linux 10 is not affected because the vulnerable code is not present in its libsoup3 packages.
Mitigation
No mitigation is currently available for this vulnerability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | N/A | 6.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | None | N/A | None |
| Availability Impact | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
Confidentiality
Technical Impact: Bypass Protection Mechanism
By reading out-of-bounds memory, an attacker might be able to get secret values, such as memory addresses, which can bypass protection mechanisms such as ASLR in order to improve the reliability and likelihood of exploiting a separate weakness to achieve code execution instead of just denial of service.
Availability,Integrity
Technical Impact: DoS: Crash, Exit, or Restart
An attacker might be able to cause a crash or other denial of service by causing the product to read a memory location that is not allowed (such as a segmentation fault), or to cause other conditions in which the read operation returns more data than is expected.
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