Common Weakness Enumeration

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-2024-24770 (GCVE-0-2024-24770)

Vulnerability from cvelistv5 – Published: 2024-03-14 18:47 – Updated: 2024-08-26 15:21
VLAI
Title
Username timing attack on recover password/MFA token in vantage6
Summary
vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. Much like GHSA-45gq-q4xh-cp53, it is possible to find which usernames exist in vantage6 by calling the API routes `/recover/lost` and `/2fa/lost`. These routes send emails to users if they have lost their password or MFA token. This issue has been addressed in commit `aecfd6d0e` and is expected to ship in subsequent releases. Users are advised to upgrade as soon as a new release is available. There are no known workarounds for this vulnerability.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
  • CWE-208 - Observable Timing Discrepancy
Assigner
Impacted products
Vendor Product Version
vantage6 vantage6 Affected: <= 4.2.2
Create a notification for this product.
vantage6 vantage6 Affected: 0 , ≤ 4.2.2 (custom)
    cpe:2.3:a:vantage6:vantage6:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2024-29995 (GCVE-0-2024-29995)

Vulnerability from cvelistv5 – Published: 2024-08-13 17:30 – Updated: 2025-07-10 16:33
VLAI
Title
Windows Kerberos Elevation of Privilege Vulnerability
Summary
Windows Kerberos Elevation of Privilege Vulnerability
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.6189 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.6189 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.6189 (custom)
Create a notification for this product.
Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.2655 (custom)
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Microsoft Windows 10 Version 21H2 Affected: 10.0.19043.0 , < 10.0.19044.4780 (custom)
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Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.4780 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 1507 Affected: 10.0.10240.0 , < 10.0.10240.20751 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < 10.0.14393.7259 (custom)
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Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.7259 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.7259 (custom)
Create a notification for this product.
Microsoft Windows Server 2008 Service Pack 2 Affected: 6.0.6003.0 , < 6.0.6003.22825 (custom)
Create a notification for this product.
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) Affected: 6.0.6003.0 , < 6.0.6003.22825 (custom)
Create a notification for this product.
Microsoft Windows Server 2008 Service Pack 2 Affected: 6.0.6003.0 , < 6.0.6003.22825 (custom)
Create a notification for this product.
Microsoft Windows Server 2008 R2 Service Pack 1 Affected: 6.1.7601.0 , < 6.1.7601.27277 (custom)
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Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) Affected: 6.1.7601.0 , < 6.1.7601.27277 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < 6.2.9200.25031 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < 6.2.9200.25031 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < 6.3.9600.22134 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < 6.3.9600.22134 (custom)
Create a notification for this product.
Date Public
2024-08-13 07:00
Show details on NVD website

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CVE-2024-31074 (GCVE-0-2024-31074)

Vulnerability from cvelistv5 – Published: 2024-11-13 21:11 – Updated: 2024-11-14 19:40
VLAI
Summary
Observable timing discrepancy in some Intel(R) QAT Engine for OpenSSL software before version v1.6.1 may allow information disclosure via network access.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • information disclosure
  • CWE-208 - Observable timing discrepancy
Assigner
Impacted products
Vendor Product Version
n/a Intel(R) QAT Engine for OpenSSL software Affected: before version v1.6.1
Show details on NVD website

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CVE-2024-3296 (GCVE-0-2024-3296)

Vulnerability from cvelistv5 – Published: 2024-04-04 13:47 – Updated: 2026-02-25 19:31
VLAI
Title
Rust-openssl: timing based side-channel can lead to a bleichenbacher style attack
Summary
A timing-based side-channel flaw exists in the rust-openssl package, which could be sufficient to recover a plaintext across a network in a Bleichenbacher-style attack. To achieve successful decryption, an attacker would have to be able to send a large number of trial messages for decryption. The vulnerability affects the legacy PKCS#1v1.5 RSA encryption padding mode.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
References
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https://bugzilla.redhat.com/show_bug.cgi?id=2269723 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Affected: 3.2.0 , < * (semver)
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Date Public
2024-03-15 00:00
Show details on NVD website

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CVE-2024-36405 (GCVE-0-2024-36405)

Vulnerability from cvelistv5 – Published: 2024-06-10 12:47 – Updated: 2024-08-02 03:37
VLAI
Title
Control-flow timing leak in Kyber reference implementation when compiled with Clang 15-18 for -Os, -O1 and other options
Summary
liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A control-flow timing lean has been identified in the reference implementation of the Kyber key encapsulation mechanism when it is compiled with Clang 15-18 for `-Os`, `-O1`, and other compilation options. A proof-of-concept local attack on the reference implementation leaks the entire ML-KEM 512 secret key in ~10 minutes using end-to-end decapsulation timing measurements. The issue has been fixed in version 0.10.1. As a possible workaround, some compiler options may produce vectorized code that does not leak secret information, however relying on these compiler options as a workaround may not be reliable.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
  • CWE-385 - Covert Timing Channel
Assigner
Impacted products
Vendor Product Version
open-quantum-safe liboqs Affected: < 0.10.1
Create a notification for this product.
open_quantum_safe liboqs Affected: 0 , ≤ 0.10.0 (custom)
    cpe:2.3:a:open_quantum_safe:liboqs:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2024-36469 (GCVE-0-2024-36469)

Vulnerability from cvelistv5 – Published: 2025-04-02 06:11 – Updated: 2025-11-03 19:30
VLAI
Title
User enumeration via timing attack in Zabbix web interface
Summary
Execution time for an unsuccessful login differs when using a non-existing username compared to using an existing one.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
Impacted products
Vendor Product Version
Zabbix Zabbix Affected: 5.0.0 , ≤ 5.0.45 (git)
Affected: 6.0.0 , ≤ 6.0.37 (git)
Affected: 7.0.0 , ≤ 7.0.8 (git)
Affected: 7.2.0 , ≤ 7.2.2 (git)
Create a notification for this product.
Credits
Zabbix wants to thank Jens Just Iversen (jensji) for submitting this report on the HackerOne bug bounty platform
Show details on NVD website

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CVE-2024-40640 (GCVE-0-2024-40640)

Vulnerability from cvelistv5 – Published: 2024-07-17 17:27 – Updated: 2024-08-02 04:33
VLAI
Title
Usage of non-constant time base64 decoder could lead to leakage of secret key material in vodozemac
Summary
vodozemac is an open source implementation of Olm and Megolm in pure Rust. Versions before 0.7.0 of vodozemac use a non-constant time base64 implementation for importing key material for Megolm group sessions and `PkDecryption` Ed25519 secret keys. This flaw might allow an attacker to infer some information about the secret key material through a side-channel attack. The use of a non-constant time base64 implementation might allow an attacker to observe timing variations in the encoding and decoding operations of the secret key material. This could potentially provide insights into the underlying secret key material. The impact of this vulnerability is considered low because exploiting the attacker is required to have access to high precision timing measurements, as well as repeated access to the base64 encoding or decoding processes. Additionally, the estimated leakage amount is bounded and low according to the referenced paper. This has been patched in commit 734b6c6948d4b2bdee3dd8b4efa591d93a61d272 which has been included in release version 0.7.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
Vendor Product Version
matrix-org vodozemac Affected: < 0.7.0
Create a notification for this product.
Show details on NVD website

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CVE-2024-41741 (GCVE-0-2024-41741)

Vulnerability from cvelistv5 – Published: 2024-11-01 16:40 – Updated: 2024-11-01 17:24
VLAI
Title
IBM TXSeries for Multiplatforms information disclosure
Summary
IBM TXSeries for Multiplatforms 10.1 could allow an attacker to determine valid usernames due to an observable timing discrepancy which could be used in further attacks against the system.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Information Exposure Through Timing Discrepancy
Assigner
ibm
References
Impacted products
Vendor Product Version
IBM TXSeries for Multiplatforms Affected: 10.1
    cpe:2.3:a:ibm:txseries_for_multiplatforms:10.1:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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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
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
Impacted products
Vendor Product Version
open-telemetry opentelemetry-collector-contrib Affected: >= 0.80.0, < 0.107.0
Create a notification for this product.
opentelemetry opentelemetry_collector_contrib Affected: 0.80.0 , < 0.107.0 (custom)
    cpe:2.3:a:opentelemetry:opentelemetry_collector_contrib:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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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.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
Vendor Product Version
ethyca fides Affected: < 2.44.0
Create a notification for this product.
ethyca fides Affected: 0 , < 2.44.0 (custom)
    cpe:2.3:a:ethyca:fides:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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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.

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