#VU109926 Buffer Over-read in libsoup - CVE-2025-2784

Vulnerability identifier: #VU109926

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-2784

CWE-ID: CWE-126

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libsoup
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a boundary error within the skip_insignificant_whitespace() function when reading server HTTP response. A remote attacker can trick the victim into visiting a specially crafted website and read 1 byte out of bounds.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libsoup: 1.99.15 - 3.6.4

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2354669
https://gitlab.gnome.org/GNOME/libsoup/-/issues/422

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?