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.
306 vulnerabilities reference this CWE, most recent first.
CVE-2024-36469 (GCVE-0-2024-36469)
Vulnerability from cvelistv5 – Published: 2025-04-02 06:11 – Updated: 2025-11-03 19:30
VLAI
EPSS
VEX
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
Credits
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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
EPSS
VEX
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.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/open-quantum-safe/liboqs/secur… | x_refsource_CONFIRM |
| https://github.com/open-quantum-safe/liboqs/commi… | x_refsource_MISC |
| https://github.com/pq-crystals/kyber/commit/9b8d3… | x_refsource_MISC |
| https://github.com/open-quantum-safe/liboqs/blob/… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| open-quantum-safe | liboqs |
Affected:
< 0.10.1
|
|
| open_quantum_safe | liboqs |
Affected:
0 , ≤ 0.10.0
(custom)
cpe:2.3:a:open_quantum_safe:liboqs:*:*:*:*:*:*:*:* |
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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
EPSS
VEX
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.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- information disclosure
- CWE-208 - Observable timing discrepancy
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) QAT Engine for OpenSSL software |
Affected:
before version v1.6.1
|
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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
EPSS
VEX
Title
Windows Kerberos Elevation of Privilege Vulnerability
Summary
Windows Kerberos Elevation of Privilege Vulnerability
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisory |
Impacted products
19 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.6189
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.6189
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.6189
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2655
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.4780
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.4780
(custom)
|
|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20751
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.7259
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.7259
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.7259
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.22825
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.6003.0 , < 6.0.6003.22825
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.22825
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.7601.0 , < 6.1.7601.27277
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.1.7601.0 , < 6.1.7601.27277
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.25031
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.25031
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.22134
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.22134
(custom)
|
Date Public
2024-08-13 07:00
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CVE-2024-24770 (GCVE-0-2024-24770)
Vulnerability from cvelistv5 – Published: 2024-03-14 18:47 – Updated: 2024-08-26 15:21
VLAI
EPSS
VEX
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.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/vantage6/vantage6/security/adv… | x_refsource_CONFIRM |
| https://github.com/vantage6/vantage6/security/adv… | x_refsource_MISC |
| https://github.com/vantage6/vantage6/commit/aecfd… | x_refsource_MISC |
Impacted products
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CVE-2024-23953 (GCVE-0-2024-23953)
Vulnerability from cvelistv5 – Published: 2025-01-28 09:07 – Updated: 2025-03-14 15:44
VLAI
EPSS
VEX
Title
Apache Hive: Timing Attack Against Signature in LLAP util
Summary
Use of Arrays.equals() in LlapSignerImpl in Apache Hive to compare message signatures allows attacker to forge a valid signature for an arbitrary message byte by byte. The attacker should be an authorized user of the product to perform this attack. Users are recommended to upgrade to version 4.0.0, which fixes this issue.
The problem occurs when an application doesn’t use a constant-time algorithm for validating a signature. The method Arrays.equals() returns false right away when it sees that one of the input’s bytes are different. It means that the comparison time depends on the contents of the arrays. This little thing may allow an attacker to forge a valid signature for an arbitrary message byte by byte. So it might allow malicious users to submit splits/work with selected signatures to LLAP without running as a privileged user, potentially leading to DDoS attack.
More details in the reference section.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/apache/hive | product |
| https://github.com/apache/hive/commit/b418e3c9f47… | patch |
| https://issues.apache.org/jira/browse/HIVE-28030 | issue-tracking |
| https://blog.gypsyengineer.com/en/security/preven… | technical-description |
| https://cqr.company/web-vulnerabilities/timing-attacks/ | technical-description |
| https://lists.apache.org/thread/0nloywj49nbtlc6l3… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2025/01/28/3 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Hive |
Affected:
2.2.0 , < 4.0.0
(semver)
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Credits
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CVE-2024-23342 (GCVE-0-2024-23342)
Vulnerability from cvelistv5 – Published: 2024-01-22 23:09 – Updated: 2025-05-30 14:21
VLAI
EPSS
VEX
Title
python-ecdsa vulnerable to Minerva attack on P-256
Summary
The `ecdsa` PyPI package is a pure Python implementation of ECC (Elliptic Curve Cryptography) with support for ECDSA (Elliptic Curve Digital Signature Algorithm), EdDSA (Edwards-curve Digital Signature Algorithm) and ECDH (Elliptic Curve Diffie-Hellman). Versions 0.18.0 and prior are vulnerable to the Minerva attack. As of time of publication, no known patched version exists.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tlsfuzzer/python-ecdsa/securit… | x_refsource_CONFIRM |
| https://github.com/tlsfuzzer/python-ecdsa/blob/ma… | x_refsource_MISC |
| https://minerva.crocs.fi.muni.cz/ | x_refsource_MISC |
| https://securitypitfalls.wordpress.com/2018/08/03… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tlsfuzzer | python-ecdsa |
Affected:
<= 0.18.0
|
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CVE-2024-22340 (GCVE-0-2024-22340)
Vulnerability from cvelistv5 – Published: 2025-03-11 00:50 – Updated: 2025-09-01 01:07
VLAI
EPSS
VEX
Title
IBM Common Cryptographic Architecture information disclosure
Summary
IBM Common Cryptographic Architecture 7.0.0 through 7.5.51
could allow a remote attacker to obtain sensitive information during the creation of ECDSA signatures to perform a timing-based attack.
Severity
6.5 (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://www.ibm.com/support/pages/node/7185282 | vendor-advisorypatch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | Common Cryptographic Architecture |
Affected:
7.0.0 , ≤ 7.5.51
(semver)
cpe:2.3:h:ibm:4769:-:*:*:*:*:*:*:* |
|
| IBM | 4769 Developers Toolkit |
Affected:
7.0.0 , ≤ 7.5.51
(semver)
|
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CVE-2024-21671 (GCVE-0-2024-21671)
Vulnerability from cvelistv5 – Published: 2024-01-30 15:43 – Updated: 2024-10-17 18:01
VLAI
EPSS
VEX
Title
vantage6 username timing attack
Summary
The vantage6 technology enables to manage and deploy privacy enhancing technologies like Federated Learning (FL) and Multi-Party Computation (MPC). It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks. Version 4.2.0 patches this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-208 - Observable Timing Discrepancy
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/vantage6/vantage6/security/adv… | x_refsource_CONFIRM |
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CVE-2024-13939 (GCVE-0-2024-13939)
Vulnerability from cvelistv5 – Published: 2025-03-28 02:05 – Updated: 2025-03-28 14:08
VLAI
EPSS
VEX
Title
String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string
Summary
String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string.
As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of the secret string may be leaked (but not its contents)."
This is similar to CVE-2020-36829
Severity
7.5 (High)
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://metacpan.org/release/FRACTAL/String-Compa… | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FRACTAL | String::Compare::ConstantTime |
Affected:
0 , ≤ 0.321
(custom)
|
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.