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Session Fixation in ipsilon

Critical severity GitHub Reviewed Published May 14, 2022 to the GitHub Advisory Database • Updated Sep 18, 2023

Package

pip ipsilon (pip)

Affected versions

>= 2.0.0, < 2.0.2
>= 1.2.0, < 1.2.1
>= 1.1.0, < 1.1.2
>= 1.0.0, < 1.0.3

Patched versions

2.0.2
1.2.1
1.1.2
1.0.3

Description

A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users. This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a "SAML2 multi-session vulnerability."

References

Published by the National Vulnerability Database Jul 12, 2017
Published to the GitHub Advisory Database May 14, 2022
Reviewed Feb 14, 2023
Last updated Sep 18, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS score

0.830%
(82nd percentile)

Weaknesses

CVE ID

CVE-2016-8638

GHSA ID

GHSA-376m-3rm2-9jm6

Source code

Credits

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