Case-sensitive Username Handling Enables Duplicate MFA Authenticators in SEP sesam
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| SEP | sesam | unaffected |
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| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Sep | Sesam |
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Vendor Solution
The issue is fixed in latest release versions >= v5.2.0.24. It is strongly recommended to update, if AD authentication is in use.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.257% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Case-sensitive Username Handling Enables Duplicate MFA Authenticators in SEP sesam |
| Type | Values Removed | Values Added |
|---|---|---|
| Title | MFA Bypass via Username Case Sensitivity in SEP sesam |
| Type | Values Removed | Values Added |
|---|---|---|
| Title | MFA Bypass via Username Case Sensitivity in SEP sesam | |
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Multiple SEP sesam User Accounts via Case Sensitivity Allowing Extra MFA Factor |
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Multiple SEP sesam User Accounts via Case Sensitivity Allowing Extra MFA Factor |
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sep
Sep sesam |
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| Vendors & Products |
Sep
Sep sesam |
| Type | Values Removed | Values Added |
|---|---|---|
| Title | SEP sesam MFA Bypass via Username Case Handling |
| Type | Values Removed | Values Added |
|---|---|---|
| Title | SEP sesam MFA Bypass via Username Case Handling |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user accounts to be created for the same Active Directory (AD) account. Active Directory treats usernames as case-insensitive, while SEP sesam distinguishes between different letter casing. As a result, the same AD user can be represented by multiple SEP sesam user accounts that differ only in username capitalization. When Active Directory authentication is configured and multi-factor authentication (MFA) is enforced, this behavior may allow an additional OTP Authenticator to be registered for the same AD account, reducing the effectiveness of MFA protection. | |
| Weaknesses | CWE-180 | |
| References |
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| Metrics |
cvssV3_1
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