CWE-208
Observable Timing Discrepancy
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.
CVE-2024-42368 (GCVE-0-2024-42368)
Vulnerability from cvelistv5 – Published: 2024-08-13 19:31 – Updated: 2024-08-14 13:38
VLAI
Title
open-telemetry has an Observable Timing Discrepancy
Summary
OpenTelemetry, also known as OTel, is a vendor-neutral open source Observability framework for instrumenting, generating, collecting, and exporting telemetry data such as traces, metrics, and logs. The bearertokenauth extension's server authenticator performs a simple, non-constant time string comparison of the received & configured bearer tokens. This impacts anyone using the `bearertokenauth` server authenticator. Malicious clients with network access to the collector may perform a timing attack against a collector with this authenticator to guess the configured token, by iteratively sending tokens and comparing the response time. This would allow an attacker to introduce fabricated or bad data into the collector's telemetry pipeline. The observable timing vulnerability was fixed by using constant-time comparison in 0.107.0
Severity
6.5 (Medium)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-c… | x_refsource_CONFIRM |
| https://github.com/open-telemetry/opentelemetry-c… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-c… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-collector-contrib |
Affected:
>= 0.80.0, < 0.107.0
|
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CVE-2024-45052 (GCVE-0-2024-45052)
Vulnerability from cvelistv5 – Published: 2024-09-04 15:43 – Updated: 2024-09-04 16:19
VLAI
Title
Fides Webserver Authentication Timing-Based Username Enumeration Vulnerability
Summary
Fides is an open-source privacy engineering platform. Prior to version 2.44.0, a timing-based username enumeration vulnerability exists in Fides Webserver authentication. This vulnerability allows an unauthenticated attacker to determine the existence of valid usernames by analyzing the time it takes for the server to respond to login requests. The discrepancy in response times between valid and invalid usernames can be leveraged to enumerate users on the system. This vulnerability enables a timing-based username enumeration attack. An attacker can systematically guess and verify which usernames are valid by measuring the server's response time to authentication requests. This information can be used to conduct further attacks on authentication such as password brute-forcing and credential stuffing. The vulnerability has been patched in Fides version `2.44.0`. Users are advised to upgrade to this version or later to secure their systems against this threat. There are no workarounds.
Severity
5.3 (Medium)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ethyca/fides/security/advisori… | x_refsource_CONFIRM |
| https://github.com/ethyca/fides/commit/457b0e9df9… | x_refsource_MISC |
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CVE-2024-47178 (GCVE-0-2024-47178)
Vulnerability from cvelistv5 – Published: 2024-09-30 15:09 – Updated: 2024-09-30 16:01
VLAI
Title
basic-auth-connect's callback uses time unsafe string comparison
Summary
basic-auth-connect is Connect's Basic Auth middleware in its own module. basic-auth-connect < 1.1.0 uses a timing-unsafe equality comparison that can leak timing information. This issue has been fixed in basic-auth-connect 1.1.0.
Severity
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/expressjs/basic-auth-connect/s… | x_refsource_CONFIRM |
| https://github.com/expressjs/basic-auth-connect/c… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| expressjs | basic-auth-connect |
Affected:
< 1.1.0
|
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CVE-2024-52307 (GCVE-0-2024-52307)
Vulnerability from cvelistv5 – Published: 2024-11-21 17:14 – Updated: 2024-11-27 16:03
VLAI
Title
authentik allows a timing attack due to missing constant time comparison for metrics view
Summary
authentik is an open-source identity provider. Due to the usage of a non-constant time comparison for the /-/metrics/ endpoint it was possible to brute-force the SECRET_KEY, which is used to authenticate the endpoint. The /-/metrics/ endpoint returns Prometheus metrics and is not intended to be accessed directly, as the Go proxy running in the authentik server container fetches data from this endpoint and serves it on a separate port (9300 by default), which can be scraped by Prometheus without being exposed publicly. authentik 2024.8.5 and 2024.10.3 fix this issue. Since the /-/metrics/ endpoint is not intended to be accessed publicly, requests to the endpoint can be blocked by the reverse proxy/load balancer used in conjunction with authentik.
Severity
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/goauthentik/authentik/security… | x_refsource_CONFIRM |
| https://github.com/goauthentik/authentik/commit/5… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| goauthentik | authentik |
Affected:
< 2024.8.5
Affected: >= 2024.10.0-rc1, < 2024.10.3 |
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CVE-2024-56738 (GCVE-0-2024-56738)
Vulnerability from cvelistv5 – Published: 2024-12-29 00:00 – Updated: 2024-12-31 18:15
VLAI
Summary
GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
Severity
5.3 (Medium)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://savannah.gnu.org/bugs/?66603 |
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CVE-2024-7010 (GCVE-0-2024-7010)
Vulnerability from cvelistv5 – Published: 2024-10-29 12:48 – Updated: 2025-10-15 12:50
VLAI
Title
Timing Attack in mudler/localai
Summary
mudler/localai version 2.17.1 is vulnerable to a Timing Attack. This type of side-channel attack allows an attacker to compromise the cryptosystem by analyzing the time taken to execute cryptographic algorithms. Specifically, in the context of password handling, an attacker can determine valid login credentials based on the server's response time, potentially leading to unauthorized access.
Severity
7.5 (High)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mudler | mudler/localai |
Affected:
unspecified , < 2.21
(custom)
|
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CVE-2025-0693 (GCVE-0-2025-0693)
Vulnerability from cvelistv5 – Published: 2025-01-23 21:22 – Updated: 2025-10-14 18:42 Exclusively Hosted Service
VLAI
Title
Issue with AWS Sign-in IAM User Login Flow - Possible Username Enumeration
Summary
Variable response times in the AWS Sign-in IAM user login flow allowed for the use of brute force enumeration techniques to identify valid IAM usernames in an arbitrary AWS account.
Severity
5.3 (Medium)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | AWS Sign-in IAM Login Flow |
Affected:
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CVE-2025-13473 (GCVE-0-2025-13473)
Vulnerability from cvelistv5 – Published: 2026-02-03 14:32 – Updated: 2026-02-03 16:19
VLAI
Title
Username enumeration through timing difference in mod_wsgi authentication handler
Summary
An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28.
The `django.contrib.auth.handlers.modwsgi.check_password()` function for authentication via `mod_wsgi` allows remote attackers to enumerate users via a timing attack.
Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.
Django would like to thank Stackered for reporting this issue.
Severity
No CVSS data available.
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://docs.djangoproject.com/en/dev/releases/se… | vendor-advisory |
| https://groups.google.com/g/django-announce | mailing-list |
| https://www.djangoproject.com/weblog/2026/feb/03/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| djangoproject | Django |
Affected:
6.0 , < 6.0.2
(semver)
Unaffected: 6.0.2 (semver) Affected: 5.2 , < 5.2.11 (semver) Unaffected: 5.2.11 (semver) Affected: 4.2 , < 4.2.28 (semver) Unaffected: 4.2.28 (semver) |
Date Public
2026-02-03 08:00
Credits
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CVE-2025-20067 (GCVE-0-2025-20067)
Vulnerability from cvelistv5 – Published: 2025-08-12 16:58 – Updated: 2025-08-12 18:25
VLAI
Summary
Observable timing discrepancy in firmware for some Intel(R) CSME and Intel(R) SPS may allow a privileged user to potentially enable information disclosure via local access.
Severity
6 (Medium)
CWE
- Information Disclosure
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) CSME and Intel(R) SPS |
Affected:
See references
|
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CVE-2025-22234 (GCVE-0-2025-22234)
Vulnerability from cvelistv5 – Published: 2026-01-22 21:02 – Updated: 2026-01-22 21:27
VLAI
Title
Spring Security - BCrypt Password Encoder maximum password length breaks timing attack mitigation
Summary
The fix applied in CVE-2025-22228 inadvertently broke the timing attack mitigation implemented in DaoAuthenticationProvider. This can allow attackers to infer valid usernames or other authentication behavior via response-time differences under certain configurations.
Severity
5.3 (Medium)
CWE
- CWE-208 - Timing Descrepency
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://spring.io/security/cve-2025-22234/ | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Spring | Spring Security |
Affected:
5.7.16
(semver)
Affected: 5.8.18 (semver) Affected: 6.0.16 (semver) Affected: 6.1.14 (semver) Affected: 6.2.10 (semver) Affected: 6.3.8 (semver) Affected: 6.4.4 (semver) |
Date Public
2025-04-25 15:43
Credits
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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.