CVE-2025-4945

Publication date 19 May 2025

Last updated 17 July 2025


Ubuntu priority

Cvss 3 Severity Score

3.7 · Low

Score breakdown

A flaw was found in the cookie parsing logic of the libsoup HTTP library, used in GNOME applications and other software. The vulnerability arises when processing the expiration date of cookies, where a specially crafted value can trigger an integer overflow. This may result in undefined behavior, allowing an attacker to bypass cookie expiration logic, causing persistent or unintended cookie behavior. The issue stems from improper validation of large integer inputs during date arithmetic operations within the cookie parsing routines.

Status

Package Ubuntu Release Status
libsoup2.4 25.04 plucky
Fixed 2.74.3-10ubuntu0.4
24.10 oracular Ignored end of life, was needs-triage
24.04 LTS noble
Fixed 2.74.3-6ubuntu1.6
22.04 LTS jammy
Fixed 2.74.2-3ubuntu0.6
20.04 LTS focal
Fixed 2.70.0-1ubuntu0.5+esm1
18.04 LTS bionic
Fixed 2.62.1-1ubuntu0.4+esm6
16.04 LTS xenial
Fixed 2.52.2-1ubuntu0.3+esm5
libsoup3 25.04 plucky
Fixed 3.6.5-1ubuntu0.2
24.10 oracular Ignored end of life, was needs-triage
24.04 LTS noble
Fixed 3.4.4-5ubuntu0.5
22.04 LTS jammy
Fixed 3.0.7-0ubuntu1+esm5
20.04 LTS focal Not in release

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libsoup3

Severity score breakdown

Parameter Value
Base score 3.7 · Low
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References

Related Ubuntu Security Notices (USN)

Other references