Common Weakness Enumeration
CWE-204
AllowedObservable Response Discrepancy
Abstraction: Base · Status: Incomplete
The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.
341 vulnerabilities reference this CWE, most recent first.
CVE-2023-27283 (GCVE-0-2023-27283)
Vulnerability from cvelistv5 – Published: 2024-05-04 13:16 – Updated: 2024-08-02 12:09
VLAI
EPSS
VEX
Title
IBM Aspera Orchestrator information disclosure
Summary
IBM Aspera Orchestrator 4.0.1 could allow a remote attacker to enumerate usernames due to observable response discrepancies. IBM X-Force ID: 248545.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-06 18:05 UTC
CWE
- CWE-204 - Response Discrepancy Information Exposure
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7150191 | vendor-advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entry |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | Aspera Orchestrator |
Affected:
4.0.1
|
|
| ibm | aspera_orchestrator |
Affected:
4.0.1
cpe:2.3:a:ibm:aspera_orchestrator:4.0.1:*:*:*:*:*:*:* |
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CVE-2023-23584 (GCVE-0-2023-23584)
Vulnerability from cvelistv5 – Published: 2023-12-18 21:59 – Updated: 2024-08-02 10:35
VLAI
EPSS
VEX
Summary
An observable response discrepancy in the Gallagher Command Centre RESTAPI allows an insufficiently-privileged user to infer the presence of items that would not otherwise be viewable.
This issue affects: Gallagher Command Centre 8.70 prior to vEL8.70.1787 (MR2), 8.60 prior to vEL8.60.2039 (MR4), all version of 8.50 and prior.
Severity
4.3 (Medium)
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gallagher | Command Centre Server |
Affected:
0 , ≤ 8.50
(custom)
Affected: 8.70 , < 8.70.1787 (MR2) (custom) Affected: 8.60 , < 8.60.2039 (MR4) (custom) |
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CVE-2023-23449 (GCVE-0-2023-23449)
Vulnerability from cvelistv5 – Published: 2023-05-15 10:54 – Updated: 2026-06-01 12:21
VLAI
EPSS
VEX
Summary
Observable Response Discrepancy in SICK FTMg AIR FLOW SENSOR with Partnumbers 1100214, 1100215, 1100216, 1120114, 1120116, 1122524, 1122526 allows a remote attacker
to gain information about valid usernames by analyzing challenge responses from the server via the
REST interface.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-23 19:13 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://sick.com/psirt | issue-tracking |
| https://sick.com/.well-known/csaf/white/2023/sca-… | vendor-advisory |
| https://sick.com/.well-known/csaf/white/2023/sca-… | x_csaf |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| SICK AG | SICK FTMG-ESD15AXX AIR FLOW SENSOR |
Affected:
all firmware versions
|
|
| SICK AG | SICK FTMG-ESD20AXX AIR FLOW SENSOR |
Affected:
all firmware versions
|
|
| SICK AG | SICK FTMG-ESD25AXX AIR FLOW SENSOR |
Affected:
all firmware versions
|
|
| SICK AG | SICK FTMG-ESN40SXX AIR FLOW SENSOR |
Affected:
all firmware versions
|
|
| SICK AG | SICK FTMG-ESN50SXX AIR FLOW SENSOR |
Affected:
all firmware versions
|
|
| SICK AG | SICK FTMG-ESR40SXX AIR FLOW SENSOR |
Affected:
all firmware versions
|
|
| SICK AG | SICK FTMG-ESR50SXX AIR FLOW SENSOR |
Affected:
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CVE-2023-4095 (GCVE-0-2023-4095)
Vulnerability from cvelistv5 – Published: 2023-09-19 13:22 – Updated: 2024-09-25 15:28
VLAI
EPSS
VEX
Title
User enumeration vulnerability in Fujitsu Arconte Áurea
Summary
User enumeration vulnerability in Arconte Áurea 1.5.0.0 version. The exploitation of this vulnerability could allow an attacker to obtain a list of registered users in the application, obtaining the necessary information to perform more complex attacks on the platform.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-25 15:27 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Fujitsu | Arconte Áurea |
Affected:
0 , < 1.5.0.0
(custom)
|
Date Public
2023-09-01 10:00
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CVE-2023-3336 (GCVE-0-2023-3336)
Vulnerability from cvelistv5 – Published: 2023-07-05 09:11 – Updated: 2024-11-20 21:22
VLAI
EPSS
VEX
Title
TN-5900 Series User Enumeration Vulnerability
Summary
TN-5900 Series version 3.3 and prior versions is vulnearble to user enumeration vulnerability. The vulnerability may allow a remote attacker to determine whether a user is valid during password recovery through the web login page and enable a brute force attack with valid users.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-20 21:21 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.moxa.com/en/support/product-support/s… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Moxa | TN-5900 Series |
Affected:
1.0 , ≤ 3.3
(custom)
|
|
| moxa | tn-5900 |
Affected:
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cpe:2.3:h:moxa:tn-5900:-:*:*:*:*:*:*:* |
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CVE-2023-3221 (GCVE-0-2023-3221)
Vulnerability from cvelistv5 – Published: 2023-09-04 12:31 – Updated: 2024-09-30 18:47
VLAI
EPSS
VEX
Title
User enumeration vulnerability in Roundcube Password Recovery Plugin
Summary
User enumeration vulnerability in Password Recovery plugin 1.2 version for Roundcube, which could allow a remote attacker to create a test script against the password recovery function to enumerate all users in the database.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-30 18:46 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AlfnRU | Password Recovery Plugin |
Affected:
1.2
|
Date Public
2023-08-31 12:08
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CVE-2023-1540 (GCVE-0-2023-1540)
Vulnerability from cvelistv5 – Published: 2023-03-21 00:00 – Updated: 2025-02-25 20:24
VLAI
EPSS
VEX
Title
Observable Response Discrepancy in answerdev/answer
Summary
Observable Response Discrepancy in GitHub repository answerdev/answer prior to 1.0.6.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-25 20:24 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| answerdev | answerdev/answer |
Affected:
unspecified , < 1.0.6
(custom)
|
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CVE-2022-41697 (GCVE-0-2022-41697)
Vulnerability from cvelistv5 – Published: 2022-12-23 23:03 – Updated: 2025-04-14 18:07
VLAI
EPSS
VEX
Summary
A user enumeration vulnerability exists in the login functionality of Ghost Foundation Ghost 5.9.4. A specially-crafted HTTP request can lead to a disclosure of sensitive information. An attacker can send a series of HTTP requests to trigger this vulnerability.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 18:07 UTC
CWE
- CWE-204 - Response Discrepancy Information Exposure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ghost Foundation | Ghost |
Affected:
5.9.4
|
Date Public
2022-12-28 00:00
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CVE-2022-39315 (GCVE-0-2022-39315)
Vulnerability from cvelistv5 – Published: 2022-10-25 00:00 – Updated: 2025-04-23 16:44
VLAI
EPSS
VEX
Title
Kirby CMS vulnerable to user enumeration in the brute force protection
Summary
Kirby is a Content Management System. Prior to versions 3.5.8.2, 3.6.6.2, 3.7.5.1, and 3.8.1, a user enumeration vulnerability affects all Kirby sites with user accounts unless Kirby's API and Panel are disabled in the config. It can only be exploited for targeted attacks because the attack does not scale to brute force. The problem has been patched in Kirby 3.5.8.2, Kirby 3.6.6.2, Kirby 3.7.5.1, and Kirby 3.8.1. In all of the mentioned releases, the maintainers have rewritten the affected code so that the delay is also inserted after the brute force limit is reached.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 15:49 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
References
Impacted products
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CVE-2022-39228 (GCVE-0-2022-39228)
Vulnerability from cvelistv5 – Published: 2023-03-01 16:23 – Updated: 2025-03-07 21:24
VLAI
EPSS
VEX
Title
Observable Response Discrepancy in vantage6
Summary
vantage6 is a privacy preserving federated learning infrastructure for secure insight exchange. vantage6 does not inform the user of wrong username/password combination if the username actually exists. This is an attempt to prevent bots from obtaining usernames. However, if a wrong password is entered a number of times, the user account is blocked temporarily. This issue has been fixed in version 3.8.0.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-07 21:24 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/vantage6/vantage6/security/adv… | x_refsource_CONFIRM |
| https://github.com/vantage6/vantage6/issues/59 | x_refsource_MISC |
| https://github.com/vantage6/vantage6/pull/281 | x_refsource_MISC |
| https://github.com/vantage6/vantage6/commit/ab438… | x_refsource_MISC |
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Mitigation MIT-46
Architecture and Design
Strategy: Separation of Privilege
- Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation MIT-39
Implementation
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-331: ICMP IP Total Length Field Probe
An adversary sends a UDP packet to a closed port on the target machine to solicit an IP Header's total length field value within the echoed 'Port Unreachable" error message. This type of behavior is useful for building a signature-base of operating system responses, particularly when error messages contain other types of information that is useful identifying specific operating system responses.
CAPEC-332: ICMP IP 'ID' Field Error Message Probe
An adversary sends a UDP datagram having an assigned value to its internet identification field (ID) to a closed port on a target to observe the manner in which this bit is echoed back in the ICMP error message. This allows the attacker to construct a fingerprint of specific OS behaviors.
CAPEC-541: Application Fingerprinting
An adversary engages in fingerprinting activities to determine the type or version of an application installed on a remote target.
CAPEC-580: System Footprinting
An adversary engages in active probing and exploration activities to determine security information about a remote target system. Often times adversaries will rely on remote applications that can be probed for system configurations.