Common Weakness Enumeration
CWE-385
AllowedCovert Timing Channel
Abstraction: Base · Status: Incomplete
Covert timing channels convey information by modulating some aspect of system behavior over time, so that the program receiving the information can observe system behavior and infer protected information.
36 vulnerabilities reference this CWE, most recent first.
CVE-2025-9231 (GCVE-0-2025-9231)
Vulnerability from cvelistv5 – Published: 2025-09-30 13:17 – Updated: 2026-11-06 21:45
VLAI
EPSS
VEX
Title
Timing side-channel in SM2 algorithm on 64 bit ARM
Summary
Issue summary: A timing side-channel which could potentially allow remote
recovery of the private key exists in the SM2 algorithm implementation on 64 bit
ARM platforms.
Impact summary: A timing side-channel in SM2 signature computations on 64 bit
ARM platforms could allow recovering the private key by an attacker..
While remote key recovery over a network was not attempted by the reporter,
timing measurements revealed a timing signal which may allow such an attack.
OpenSSL does not directly support certificates with SM2 keys in TLS, and so
this CVE is not relevant in most TLS contexts. However, given that it is
possible to add support for such certificates via a custom provider, coupled
with the fact that in such a custom provider context the private key may be
recoverable via remote timing measurements, we consider this to be a Moderate
severity issue.
The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this
issue, as SM2 is not an approved algorithm.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-30 19:27 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
openssl
CNA
References
11 references
Impacted products
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSSL | OpenSSL |
Affected:
3.5.0 , < 3.5.4
(semver)
Affected: 3.4.0 , < 3.4.3 (semver) Affected: 3.3.0 , < 3.3.5 (semver) Affected: 3.2.0 , < 3.2.6 (semver) |
|
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V4.0
(custom)
|
|
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XCH328 |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XCM324 |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XCM328 |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XCM332 |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRH334 (24 V DC, 8xFO, CC) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (230 V AC, 12xFO) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (230 V AC, 8xFO) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (24 V DC, 12xFO) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (24 V DC, 8xFO) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (2x230 V AC, 12xFO) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (2x230 V AC, 8xFO) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) |
Affected:
0 , < V3.3
(custom)
|
|
| Siemens | SIDIS Secured SmartPlug |
Affected:
0 , < V7.26.0310
(custom)
|
|
| Siemens | SIMATIC CN 4100 |
Affected:
0 , < V5.0
(custom)
|
Date Public
2025-09-30 14:00
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CVE-2025-0306 (GCVE-0-2025-0306)
Vulnerability from cvelistv5 – Published: 2025-01-09 04:05 – Updated: 2026-11-05 14:45
VLAI
EPSS
VEX
Title
Ruby: openssl: ruby marvin attack
Summary
A vulnerability was found in Ruby. The Ruby interpreter is vulnerable to the Marvin Attack. This attack allows the attacker to decrypt previously encrypted messages or forge signatures by exchanging a large number of messages with the vulnerable service.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-09 16:22 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
redhat
CNA
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-0306 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2336100 | issue-trackingx_refsource_REDHAT |
| https://security.netapp.com/advisory/ntap-2025022… |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < *
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/a:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:rhel_els:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/a:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/a:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Storage 3 |
cpe:/a:redhat:storage:3
|
Date Public
2024-06-24 00:00
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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 · CISA-ADP (v2.0.3)
Decision recorded 2024-06-10 18:07 UTC
Assigner
GitHub_M
CNA
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
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|
| open_quantum_safe | liboqs |
Affected:
0 , ≤ 0.10.0
(custom)
cpe:2.3:a:open_quantum_safe:liboqs:*:*:*:*:*:*:*:* |
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CVE-2024-25964 (GCVE-0-2024-25964)
Vulnerability from cvelistv5 – Published: 2024-03-25 08:13 – Updated: 2024-08-23 18:53
VLAI
EPSS
VEX
Summary
Dell PowerScale OneFS 9.5.0.x through 9.7.0.x contain a covert timing channel vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability, leading to denial of service.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-23 18:50 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
dell
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-us/00022269… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | PowerScale OneFS |
Affected:
9.5.0.0 , ≤ 9.5.0.6
(semver)
Affected: 9.6.1.0 , ≤ 9.7.0.0 (semver) |
|
| dell | powerscale_onefs |
Affected:
9.5.0.0 , ≤ 9.5.0.6
(custom)
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Date Public
2024-03-04 06:30
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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 · CISA-ADP (v2.0.3)
Decision recorded 2025-05-08 15:35 UTC
CWE
Assigner
GitHub_M
CNA
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-2024-13176 (GCVE-0-2024-13176)
Vulnerability from cvelistv5 – Published: 2025-01-20 13:29 – Updated: 2026-11-06 21:43
VLAI
EPSS
VEX
Title
Timing side-channel in ECDSA signature computation
Summary
Issue summary: A timing side-channel which could potentially allow recovering
the private key exists in the ECDSA signature computation.
Impact summary: A timing side-channel in ECDSA signature computations
could allow recovering the private key by an attacker. However, measuring
the timing would require either local access to the signing application or
a very fast network connection with low latency.
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the inverted ECDSA nonce value is zero. This can happen with significant
probability only for some of the supported elliptic curves. In particular
the NIST P-521 curve is affected. To be able to measure this leak, the attacker
process must either be located in the same physical computer or must
have a very fast network connection with low latency. For that reason
the severity of this vulnerability is Low.
The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are affected by this issue.
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-27 20:21 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
openssl
CNA
References
13 references
Impacted products
Date Public
2025-01-20 14:00
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CVE-2024-11862 (GCVE-0-2024-11862)
Vulnerability from cvelistv5 – Published: 2024-11-27 14:35 – Updated: 2024-11-27 14:53
VLAI
EPSS
VEX
Summary
Non constant time cryptographic operation in Devolutions.XTS.NET 2024.11.19 and earlier allows an attacker to render half of the encryption key obsolete via a timing attacks
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-27 14:53 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
DEVOLUTIONS
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Devolutions | XTS.NET |
Affected:
0 , < 2024.11.26
(custom)
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CVE-2024-2236 (GCVE-0-2024-2236)
Vulnerability from cvelistv5 – Published: 2024-03-06 22:07 – Updated: 2026-11-05 12:01
VLAI
EPSS
VEX
Title
Libgcrypt: vulnerable to marvin attack
Summary
A timing-based side-channel flaw was found in libgcrypt's RSA implementation. This issue may allow a remote attacker to initiate a Bleichenbacher-style attack, which can lead to the decryption of RSA ciphertexts.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-07 20:07 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
redhat
CNA
References
7 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2024:9404 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:3530 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2025:3534 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2024-2236 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2245218 | issue-trackingx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2268268 | issue-trackingx_refsource_REDHATx_transferred |
| https://cert-portal.siemens.com/productcert/html/… |
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < 9.4.0
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:1.10.0-11.el9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support |
Unaffected:
0:1.10.0-10.el9_2.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.2::appstream cpe:/o:redhat:rhel_eus:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
Unaffected:
0:1.10.0-10.el9_4.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.4::appstream cpe:/o:redhat:rhel_eus:9.4::baseos |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/a:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:rhel_els:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/a:redhat:enterprise_linux:8
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
Date Public
2024-03-06 00:00
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CVE-2023-49092 (GCVE-0-2023-49092)
Vulnerability from cvelistv5 – Published: 2023-11-28 20:57 – Updated: 2024-11-27 16:03
VLAI
EPSS
VEX
Title
RustCrypto/RSA vulnerable to a Marvin Attack via key recovery through timing sidechannels
Summary
RustCrypto/RSA is a portable RSA implementation in pure Rust. Due to a non-constant-time implementation, information about the private key is leaked through timing information which is observable over the network. An attacker may be able to use that information to recover the key. There is currently no fix available. As a workaround, avoid using the RSA crate in settings where attackers are able to observe timing information, e.g. local use on a non-compromised computer.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-27 16:03 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/RustCrypto/RSA/security/adviso… | x_refsource_CONFIRM |
| https://github.com/RustCrypto/RSA/issues/19#issue… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RustCrypto | RSA |
Affected:
<= 0.9.5
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CVE-2023-33855 (GCVE-0-2023-33855)
Vulnerability from cvelistv5 – Published: 2024-03-26 14:04 – Updated: 2024-08-05 16:12
VLAI
EPSS
VEX
Title
IBM Common Cryptographic Architecture information disclosure
Summary
Under certain conditions, RSA operations performed by IBM Common Cryptographic Architecture (CCA) 7.0.0 through 7.5.36 may exhibit non-constant-time behavior. This could allow a remote attacker to obtain sensitive information using a timing-based attack. IBM X-Force ID: 257676.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-05 16:12 UTC
CWE
- CWE-385 - Covert Timing Channel
Assigner
ibm
CNA
References
2 references
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7145168 | vendor-advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | Common Cryptographic Architecture |
Affected:
7.0.0 , ≤ 7.5.36
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Mitigation
Architecture and Design
Whenever possible, specify implementation strategies that do not introduce time variances in operations.
Mitigation
Implementation
Often one can artificially manipulate the time which operations take or -- when operations occur -- can remove information from the attacker.
Mitigation
Implementation
It is reasonable to add artificial or random delays so that the amount of CPU time consumed is independent of the action being taken by the application.
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.