Session impersonation via accepted session identifiers
Published Jun 19, 2020 · Updated Aug 6, 2024
Authentication bypass in Mattermost Server before 3.0.2 allows remote attackers to access user sessions by supplying a session ID. The WebSocket connection stored Session.Id where a session token was required, and GetSession accepted the lookup result without checking that Session.Token matched the supplied value. A valid session ID is required; acceptance exposes the associated user's session context to unauthorized reading and actions.
Summary
What happened
Authentication bypass in Mattermost Server before 3.0.2 allows remote attackers to access user sessions by supplying a session ID. The WebSocket connection stored Session.Id where a session token was required, and GetSession accepted the lookup result without checking that Session.Token matched the supplied value. A valid session ID is required; acceptance exposes the associated user's session context to unauthorized reading and actions.
The record
- CVE
- CVE-2016-11072
- Published
- Jun 19, 2020
- Updated
- Aug 6, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1550.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 19, 2020CVE publishedPublication date reported by the CVE source.
- Aug 6, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo