Common Weakness Enumeration
CWE-203
AllowedObservable Discrepancy
Abstraction: Base · Status: Incomplete
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
836 vulnerabilities reference this CWE, most recent first.
CVE-2023-3529 (GCVE-0-2023-3529)
Vulnerability from cvelistv5 – Published: 2023-07-06 18:31 – Updated: 2024-08-02 06:55
VLAI
EPSS
VEX
Title
Rotem Dynamics Rotem CRM OTP URI Interface information exposure
Summary
A vulnerability classified as problematic has been found in Rotem Dynamics Rotem CRM up to 20230729. This affects an unknown part of the file /LandingPages/api/otp/send?id=[ID][ampersand]method=sms of the component OTP URI Interface. The manipulation leads to information exposure through discrepancy. It is possible to initiate the attack remotely. The identifier VDB-233253 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Severity
5.3 (Medium)
5.3 (Medium)
CWE
- CWE-203 - Information Exposure Through Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.233253 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.233253 | signature |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Rotem Dynamics | Rotem CRM |
Affected:
20230729
|
Credits
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CVE-2023-3462 (GCVE-0-2023-3462)
Vulnerability from cvelistv5 – Published: 2023-07-31 22:40 – Updated: 2024-10-21 18:04
VLAI
EPSS
VEX
Title
Vault's LDAP Auth Method Allows for User Enumeration
Summary
HashiCorp's Vault and Vault Enterprise are vulnerable to user enumeration when using the LDAP auth method. An attacker may submit requests of existent and non-existent LDAP users and observe the response from Vault to check if the account is valid on the LDAP server. This vulnerability is fixed in Vault 1.14.1 and 1.13.5.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| HashiCorp | Vault |
Affected:
1.13.0 , ≤ 1.13.4
(semver)
Affected: 1.14.0 |
|
| HashiCorp | Vault Enterprise |
Affected:
1.13.0 , ≤ 1.13.4
(semver)
Affected: 1.14.0 |
Credits
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CVE-2023-0440 (GCVE-0-2023-0440)
Vulnerability from cvelistv5 – Published: 2023-01-23 00:00 – Updated: 2025-04-03 16:58
VLAI
EPSS
VEX
Title
Observable Discrepancy in healthchecks/healthchecks
Summary
Observable Discrepancy in GitHub repository healthchecks/healthchecks prior to v2.6.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| healthchecks | healthchecks/healthchecks |
Affected:
unspecified , < v2.6
(custom)
|
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CVE-2022-50800 (GCVE-0-2022-50800)
Vulnerability from cvelistv5 – Published: 2025-12-30 22:41 – Updated: 2026-01-02 19:51
VLAI
EPSS
VEX
Title
H3C SSL VPN n/a Username Enumeration via Login Script Credential Verification
Summary
H3C SSL VPN contains a user enumeration vulnerability that allows attackers to identify valid usernames through the 'txtUsrName' POST parameter. Attackers can submit different usernames to the login_submit.cgi endpoint and analyze response messages to distinguish between existing and non-existing accounts.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50742 | exploit |
| https://www.h3c.com | product |
| https://www.zeroscience.mk/en/vulnerabilities/ZSL… | third-party-advisory |
| https://www.vulncheck.com/advisories/hc-ssl-vpn-n… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Hangzhou H3C Technologies | H3C SSL VPN |
Affected:
1.1
|
Date Public
2022-01-24 00:00
Credits
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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 (v2.0.3)
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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CVE-2022-36105 (GCVE-0-2022-36105)
Vulnerability from cvelistv5 – Published: 2022-09-13 17:40 – Updated: 2025-04-23 17:11
VLAI
EPSS
VEX
Title
User Enumeration via Response Timing in TYPO3
Summary
TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that observing response time during user authentication (backend and frontend) can be used to distinguish between existing and non-existing user accounts. Extension authors of 3rd party TYPO3 extensions providing a custom authentication service should check if the extension is affected by the described problem. Affected extensions must implement new `MimicServiceInterface::mimicAuthUser`, which simulates corresponding times regular processing would usually take. Update to TYPO3 version 7.6.58 ELTS, 8.7.48 ELTS, 9.5.37 ELTS, 10.4.32 or 11.5.16 that fix this problem. There are no known workarounds for this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/TYPO3/typo3/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/TYPO3/typo3/commit/f8b83ce15d4… | x_refsource_MISC |
| https://typo3.org/security/advisory/typo3-core-sa… | x_refsource_MISC |
Impacted products
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CVE-2022-29185 (GCVE-0-2022-29185)
Vulnerability from cvelistv5 – Published: 2022-05-20 19:30 – Updated: 2025-04-23 18:24
VLAI
EPSS
VEX
Title
Observable Timing Discrepancy in totp-rs
Summary
totp-rs is a Rust library that permits the creation of 2FA authentification tokens per time-based one-time password (TOTP). Prior to version 1.1.0, token comparison was not constant time, and could theorically be used to guess value of an TOTP token, and thus reuse it in the same time window. The attacker would have to know the password beforehand nonetheless. Starting with patched version 1.1.0, the library uses constant-time comparison. There are currently no known workarounds.
Severity
4.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/constantoine/totp-rs/security/… | x_refsource_CONFIRM |
| https://github.com/constantoine/totp-rs/issues/13 | x_refsource_MISC |
| https://github.com/constantoine/totp-rs/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| constantoine | totp-rs |
Affected:
<1.1.0
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CVE-2022-27221 (GCVE-0-2022-27221)
Vulnerability from cvelistv5 – Published: 2022-06-14 09:21 – Updated: 2025-04-21 13:53
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.1). An attacker in machine-in-the-middle could obtain plaintext secret values by observing length differences during a series of guesses in which a string in an HTTP request URL potentially matches an unknown string in an HTTP response body, aka a "BREACH" attack.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | SINEMA Remote Connect Server |
Affected:
0 , < V3.1
(custom)
|
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CVE-2022-24043 (GCVE-0-2022-24043)
Vulnerability from cvelistv5 – Published: 2022-05-10 09:46 – Updated: 2024-08-03 03:59
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions < V02.20.142.10-10884), Desigo PXC5 (All versions < V02.20.142.10-10884). The login functionality of the application fails to normalize the response times of login attempts performed with wrong usernames with the ones executed with correct usernames. A remote unauthenticated attacker could exploit this side-channel information to perform a username enumeration attack and identify valid usernames.
Severity
No CVSS data available.
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_MISC |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | Desigo DXR2 |
Affected:
All versions < V01.21.142.5-22
|
|
| Siemens | Desigo PXC3 |
Affected:
All versions < V01.21.142.4-18
|
|
| Siemens | Desigo PXC4 |
Affected:
All versions < V02.20.142.10-10884
|
|
| Siemens | Desigo PXC5 |
Affected:
All versions < V02.20.142.10-10884
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CVE-2022-23643 (GCVE-0-2022-23643)
Vulnerability from cvelistv5 – Published: 2022-02-15 21:25 – Updated: 2025-04-23 19:04
VLAI
EPSS
VEX
Title
Side-channel attack in Sourcegraph Code Monitors
Summary
Sourcegraph is a code search and navigation engine. Sourcegraph versions 3.35 and 3.36 reintroduced a previously fixed side-channel vulnerabilitity in the Code Monitoring feature where strings in private source code could be guessed by an authenticated but unauthorized actor. This issue affects only the Code Monitoring feature, whereas CVE-2021-43823 also affected saved searches. A successful attack would require an authenticated bad actor to create many Code Monitors to receive confirmation that a specific string exists. This could allow an attacker to guess formatted tokens in source code, such as API keys. This issue was patched in versions 3.35.2 and 3.36.3 of Sourcegraph. Those who are unable to upgrade may disable the Code Monitor feature in their installation.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/sourcegraph/sourcegraph/securi… | x_refsource_CONFIRM |
| https://github.com/sourcegraph/sourcegraph/pull/30547 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| sourcegraph | sourcegraph |
Affected:
>= 3.35, < 3.35.2
Affected: >= 3.36, < 3.36.3 |
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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-189: Black Box Reverse Engineering
An adversary discovers the structure, function, and composition of a type of computer software through black box analysis techniques. 'Black Box' methods involve interacting with the software indirectly, in the absence of direct access to the executable object. Such analysis typically involves interacting with the software at the boundaries of where the software interfaces with a larger execution environment, such as input-output vectors, libraries, or APIs. Black Box Reverse Engineering also refers to gathering physical side effects of a hardware device, such as electromagnetic radiation or sounds.