Account impersonation via forged masquerade session state
Published Dec 7, 2021 · Updated Aug 3, 2024
Authentication bypass in devise_masquerade before 1.3.1 allows remote authenticated users to impersonate any application user. The masquerade-back handler trusts the devise_masquerade_user value in an encrypted session cookie, letting a forged value select the return identity without that user's password salt. Exploitation requires a leaked Rails secret_key_base, a valid user login, and the target user's ID; successful use grants the target account's privileges.
Summary
What happened
Authentication bypass in devise_masquerade before 1.3.1 allows remote authenticated users to impersonate any application user. The masquerade-back handler trusts the devise_masquerade_user value in an encrypted session cookie, letting a forged value select the return identity without that user's password salt. Exploitation requires a leaked Rails secret_key_base, a valid user login, and the target user's ID; successful use grants the target account's privileges.
The record
- CVE
- CVE-2021-28680
- Published
- Dec 7, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-269, T1550.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 7, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- Masquerade-back forged session-cookie proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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