Common Weakness Enumeration
CWE-208
AllowedObservable Timing Discrepancy
Abstraction: Base · Status: Incomplete
Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
318 vulnerabilities reference this CWE, most recent first.
CVE-2024-0202 (GCVE-0-2024-0202)
Vulnerability from cvelistv5 – Published: 2024-02-05 20:44 – Updated: 2026-03-16 19:49 Disputed
VLAI
EPSS
VEX
Title
Cryptlib: rsa key exchange ciphersuites in tls vulnerable to marvin attack
Summary
A security vulnerability has been identified in the cryptlib cryptographic library when cryptlib is compiled with the support for RSA key exchange ciphersuites in TLS (by setting the USE_RSA_SUITES define), it will be vulnerable to the timing variant of the Bleichenbacher attack. An attacker that is able to perform a large number of connections to the server will be able to decrypt RSA ciphertexts or forge signatures using server's certificate. THIS CVE ID IS CURRENTLY DISPUTED - MAINTAINER NOTE: There are only two situations where it's enabled, one is for fuzz-testing to exercise code paths that wouldn't otherwise be available, the other is for static source code analysis with tools like Coverity and Prefast, again to open up code paths that otherwise wouldn't be available. It can also be enabled manually in two specific test builds just to make sure the code still compiles OK, to avoid bit rot and verify that the fuzz-testing build will compile without errors.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2256518 | issue-trackingx_refsource_REDHAT |
Date Public
2024-01-02 00:00
Credits
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CVE-2023-41313 (GCVE-0-2023-41313)
Vulnerability from cvelistv5 – Published: 2024-03-12 10:16 – Updated: 2025-02-13 17:09
VLAI
EPSS
VEX
Title
Apache Doris: Timing Attack weakness
Summary
The authentication method in Apache Doris versions before 2.0.0 was vulnerable to timing attacks.
Users are recommended to upgrade to version 2.0.0 + or 1.2.8, which fixes this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
2 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Doris |
Affected:
0 , < 1.2.8
(semver)
|
|
| apache | doris |
Affected:
0 , < 1.2.8
(semver)
cpe:2.3:a:apache:doris:*:*:*:*:*:*:*:* |
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CVE-2023-41097 (GCVE-0-2023-41097)
Vulnerability from cvelistv5 – Published: 2023-12-21 20:33 – Updated: 2025-04-23 16:23
VLAI
EPSS
VEX
Title
Potential Timing vulnerability in CBC PKCS7 padding calculations
Summary
An Observable Timing Discrepancy, Covert Timing Channel vulnerability in Silabs GSDK on ARM potentially allows Padding Oracle Crypto Attack on CBC PKCS7.This issue affects GSDK: through 4.4.0.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://siliconlabs.lightning.force.com/sfc/servl… | vendor-advisory |
| https://github.com/SiliconLabs/gecko_sdk/releases | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| silabs.com | GSDK |
Affected:
0 , < 4.4.0
(LessThan)
|
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CVE-2023-40182 (GCVE-0-2023-40182)
Vulnerability from cvelistv5 – Published: 2023-08-25 00:36 – Updated: 2024-09-30 18:18
VLAI
EPSS
VEX
Title
silverware-io-issue-tracker server responds in a noticeably different amount of time depending if a given email address exists or not
Summary
Silverware Games is a premium social network where people can play games online. When using the Recovery form, a noticeably different amount of time passes depending of whether the specified email address presents in our database or not. This has been fixed in version 1.3.7.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/mesosoi/silverwaregames-io-iss… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mesosoi | silverwaregames-io-issue-tracker |
Affected:
< 1.3.7
|
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CVE-2023-40021 (GCVE-0-2023-40021)
Vulnerability from cvelistv5 – Published: 2023-08-16 20:25 – Updated: 2024-10-03 13:37
VLAI
EPSS
VEX
Title
Timing Attack Reveals CSRF Tokens in oppia
Summary
Oppia is an online learning platform. When comparing a received CSRF token against the expected token, Oppia uses the string equality operator (`==`), which is not safe against timing attacks. By repeatedly submitting invalid tokens, an attacker can brute-force the expected CSRF token character by character. Once they have recovered the token, they can then submit a forged request on behalf of a logged-in user and execute privileged actions on that user's behalf. In particular the function to validate received CSRF tokens is at `oppia.core.controllers.base.CsrfTokenManager.is_csrf_token_valid`. An attacker who can lure a logged-in Oppia user to a malicious website can perform any change on Oppia that the user is authorized to do, including changing profile information; creating, deleting, and changing explorations; etc. Note that the attacker cannot change a user's login credentials. An attack would need to complete within 1 second because every second, the time used in computing the token changes. This issue has been addressed in commit `b89bf80837` which has been included in release `3.3.2-hotfix-2`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/oppia/oppia/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/oppia/oppia/pull/18769 | x_refsource_MISC |
| https://github.com/oppia/oppia/commit/b89bf808378… | x_refsource_MISC |
| https://github.com/oppia/oppia/blob/3a05c3558a292… | x_refsource_MISC |
Impacted products
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CVE-2023-32694 (GCVE-0-2023-32694)
Vulnerability from cvelistv5 – Published: 2023-05-25 14:29 – Updated: 2025-01-16 19:21
VLAI
EPSS
VEX
Title
Non-constant time HMAC comparison in Adyen plugin in Saleor
Summary
Saleor Core is a composable, headless commerce API. Saleor's `validate_hmac_signature` function is vulnerable to timing attacks. Malicious users could abuse this vulnerability on Saleor deployments having the Adyen plugin enabled in order to determine the secret key and forge fake events, this could affect the database integrity such as marking an order as paid when it is not. This issue has been patched in versions 3.7.68, 3.8.40, 3.9.49, 3.10.36, 3.11.35, 3.12.25, and 3.13.16.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/saleor/saleor/security/advisor… | x_refsource_CONFIRM |
| https://github.com/saleor/saleor/commit/1328274e1… | x_refsource_MISC |
Impacted products
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CVE-2023-25806 (GCVE-0-2023-25806)
Vulnerability from cvelistv5 – Published: 2023-03-02 03:04 – Updated: 2025-03-05 21:28
VLAI
EPSS
VEX
Title
Time discrepancy in authentication responses in OpenSearch
Summary
OpenSearch Security is a plugin for OpenSearch that offers encryption, authentication and authorization. There is an observable discrepancy in the authentication response time between calls where the user provided exists and calls where it does not. This issue only affects calls using the internal basic identity provider (IdP), and not other externally configured IdPs. Patches were released in versions 1.3.9 and 2.6.0, there are no workarounds.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opensearch-project/security/se… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| opensearch-project | security |
Affected:
< 1.3.9
Affected: >= 2.0.0, < 2.6.0 |
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CVE-2023-25529 (GCVE-0-2023-25529)
Vulnerability from cvelistv5 – Published: 2023-09-20 00:08 – Updated: 2024-08-02 11:25
VLAI
EPSS
VEX
Summary
NVIDIA DGX H100 BMC and DGX A100 BMC contains a vulnerability in the host KVM daemon, where an unauthenticated attacker may cause a leak of another user’s session token by observing timing discrepancies between server responses. A successful exploit of this vulnerability may lead to information disclosure, escalation of privileges, and data tampering.
Severity
CWE
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | DGX H100 BMC |
Affected:
All versions prior to 23.08.07
|
|
| NVIDIA | DGX A100 BMC |
Affected:
All BMC versions prior to 00.22.05
|
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CVE-2023-25000 (GCVE-0-2023-25000)
Vulnerability from cvelistv5 – Published: 2023-03-30 00:17 – Updated: 2025-02-13 16:44
VLAI
EPSS
VEX
Title
Vault Vulnerable to Cache-Timing Attacks During Seal and Unseal Operations
Summary
HashiCorp Vault's implementation of Shamir's secret sharing used precomputed table lookups, and was vulnerable to cache-timing attacks. An attacker with access to, and the ability to observe a large number of unseal operations on the host through a side channel may reduce the search space of a brute force effort to recover the Shamir shares. Fixed in Vault 1.13.1, 1.12.5, and 1.11.9.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| HashiCorp | Vault |
Affected:
1.13.0 , < 1.13.1
(semver)
Affected: 1.12.0 , < 1.12.5 (semver) Affected: 1.11.0 , < 1.11.9 (semver) Affected: 0 , < 1.11.0 (semver) |
|
| HashiCorp | Vault Enterprise |
Affected:
1.13.0 , < 1.13.1
(semver)
Affected: 1.12.0 , < 1.12.5 (semver) Affected: 1.11.0 , < 1.11.9 (semver) Affected: 0 , < 1.11.0 (semver) |
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CVE-2023-20572 (GCVE-0-2023-20572)
Vulnerability from cvelistv5 – Published: 2026-06-26 15:53 – Updated: 2026-06-26 15:59
VLAI
EPSS
VEX
Summary
An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing the input of an arbitrary message, potentially leading to a loss of data integrity.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable timing discrepancy
Assigner
References
1 reference
Impacted products
18 products
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No mitigation information available for this CWE.
CAPEC-462: Cross-Domain Search Timing
An attacker initiates cross domain HTTP / GET requests and times the server responses. The timing of these responses may leak important information on what is happening on the server. Browser's same origin policy prevents the attacker from directly reading the server responses (in the absence of any other weaknesses), but does not prevent the attacker from timing the responses to requests that the attacker issued cross domain.
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.