CWE-203
Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
CVE-2024-0564 (GCVE-0-2024-0564)
Vulnerability from cvelistv5 – Published: 2024-01-30 15:01 – Updated: 2025-11-21 06:24
VLAI
Title
Kernel: max page sharing of kernel samepage merging (ksm) may cause memory deduplication
Summary
A flaw was found in the Linux kernel's memory deduplication mechanism. The max page sharing of Kernel Samepage Merging (KSM), added in Linux kernel version 4.4.0-96.119, can create a side channel. When the attacker and the victim share the same host and the default setting of KSM is "max page sharing=256", it is possible for the attacker to time the unmap to merge with the victim's page. The unmapping time depends on whether it merges with the victim's page and additional physical pages are created beyond the KSM's "max page share". Through these operations, the attacker can leak the victim's page.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2024-0564 | vdb-entryx_refsource_REDHAT |
| https://bugs.launchpad.net/ubuntu/+source/linux/+… | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2258514 | issue-trackingx_refsource_REDHAT |
| https://link.springer.com/conference/wisa | |
| https://wisa.or.kr/accepted |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Unaffected:
0 , < 4.4.0-96.119
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2024-01-20 00:00
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CVE-2024-0914 (GCVE-0-2024-0914)
Vulnerability from cvelistv5 – Published: 2024-01-31 04:53 – Updated: 2026-03-24 11:28
VLAI
Title
Opencryptoki: timing side-channel in handling of rsa pkcs#1 v1.5 padded ciphertexts (marvin)
Summary
A timing side-channel vulnerability has been discovered in the opencryptoki package while processing RSA PKCS#1 v1.5 padded ciphertexts. This flaw could potentially enable unauthorized RSA ciphertext decryption or signing, even without access to the corresponding private key.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2024:1239 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1411 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1608 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1856 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:1992 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2024-0914 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2260407 | issue-trackingx_refsource_REDHAT |
| https://people.redhat.com/~hkario/marvin/ |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
3.0.0 , < 3.23.0
(semver)
|
|||
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:3.21.0-10.el8_9 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:8::baseos cpe:/a:redhat:enterprise_linux:8::crb |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support |
Unaffected:
0:3.17.0-6.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support |
Unaffected:
0:3.19.0-3.el8_8 , < *
(rpm)
cpe:/o:redhat:rhel_eus:8.8::baseos cpe:/a:redhat:rhel_eus:8.8::crb |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:3.21.0-9.el9_3 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::crb cpe:/o:redhat:enterprise_linux:9::baseos |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support |
Unaffected:
0:3.19.0-3.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.2::crb cpe:/o:redhat:rhel_eus:9.2::baseos |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
Date Public
2024-01-25 00:00
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CVE-2024-11084 (GCVE-0-2024-11084)
Vulnerability from cvelistv5 – Published: 2025-04-15 15:34 – Updated: 2025-04-15 15:58
VLAI
Title
Potential Username Enumeration in Helix ALM
Summary
Helix ALM prior to 2025.1 returns distinct error responses during authentication, allowing an attacker to determine whether a username exists.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
Impacted products
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CVE-2024-12663 (GCVE-0-2024-12663)
Vulnerability from cvelistv5 – Published: 2024-12-16 19:00 – Updated: 2024-12-16 19:19
VLAI
Title
funnyzpc Mee-Admin Login login observable response discrepancy
Summary
A vulnerability classified as problematic was found in funnyzpc Mee-Admin up to 1.6. This vulnerability affects unknown code of the file /mee/login of the component Login. The manipulation of the argument username leads to observable response discrepancy. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.288532 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.288532 | signaturepermissions-required |
| https://vuldb.com/?submit.458371 | third-party-advisory |
| https://github.com/funnyzpc/mee-admin/issues/9 | exploitissue-tracking |
Impacted products
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CVE-2024-13028 (GCVE-0-2024-13028)
Vulnerability from cvelistv5 – Published: 2024-12-29 23:00 – Updated: 2024-12-30 14:43
VLAI
Title
Antabot White-Jotter login observable response discrepancy
Summary
A vulnerability, which was classified as problematic, has been found in Antabot White-Jotter up to 0.2.2. This issue affects some unknown processing of the file /login. The manipulation of the argument username leads to observable response discrepancy. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.289721 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.289721 | signaturepermissions-required |
| https://vuldb.com/?submit.465924 | third-party-advisory |
| https://github.com/cydtseng/Vulnerability-Researc… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Antabot | White-Jotter |
Affected:
0.2.0
Affected: 0.2.1 Affected: 0.2.2 |
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CVE-2024-13198 (GCVE-0-2024-13198)
Vulnerability from cvelistv5 – Published: 2025-01-09 00:31 – Updated: 2025-01-09 15:37
VLAI
Title
langhsu Mblog Blog System login observable response discrepancy
Summary
A vulnerability classified as problematic has been found in langhsu Mblog Blog System 3.5.0. Affected is an unknown function of the file /login. The manipulation leads to observable response discrepancy. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.290790 | vdb-entry |
| https://vuldb.com/?ctiid.290790 | signaturepermissions-required |
| https://vuldb.com/?submit.470429 | third-party-advisory |
| https://github.com/cydtseng/Vulnerability-Researc… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| langhsu | Mblog Blog System |
Affected:
3.5.0
|
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CVE-2024-1544 (GCVE-0-2024-1544)
Vulnerability from cvelistv5 – Published: 2024-08-27 18:44 – Updated: 2026-01-27 21:58
VLAI
Title
ECDSA nonce bias caused by truncation
Summary
Generating the ECDSA nonce k samples a random number r and then
truncates this randomness with a modular reduction mod n where n is the
order of the elliptic curve. Meaning k = r mod n. The division used
during the reduction estimates a factor q_e by dividing the upper two
digits (a digit having e.g. a size of 8 byte) of r by the upper digit of
n and then decrements q_e in a loop until it has the correct size.
Observing the number of times q_e is decremented through a control-flow
revealing side-channel reveals a bias in the most significant bits of
k. Depending on the curve this is either a negligible bias or a
significant bias large enough to reconstruct k with lattice reduction
methods. For SECP160R1, e.g., we find a bias of 15 bits.
Severity
4.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
Date Public
2024-07-08 17:30
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
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-2024-23984 (GCVE-0-2024-23984)
Vulnerability from cvelistv5 – Published: 2024-09-16 16:38 – Updated: 2025-11-03 21:53
VLAI
Summary
Observable discrepancy in RAPL interface for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- information disclosure
- CWE-203 - Observable discrepancy
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) Processors |
Affected:
See references
|
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CVE-2024-2464 (GCVE-0-2024-2464)
Vulnerability from cvelistv5 – Published: 2024-03-21 14:50 – Updated: 2024-10-30 18:14
VLAI
Title
Application users enumeration in CDeX
Summary
This issue occurs during password recovery, where a difference in messages could allow an attacker to determine if the user is valid or not, enabling a brute force attack with valid users.This issue affects CDeX application versions through 5.7.1.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2024/03/CVE-2024-2463/ | third-party-advisory |
| https://cert.pl/posts/2024/03/CVE-2024-2463/ | third-party-advisory |
| https://cdex.cloud/ | product |
Credits
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Mitigation ID: MIT-46
Phase: Architecture and Design
Strategy: Separation of Privilege
Description:
- Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation ID: MIT-39
Phase: Implementation
Description:
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-189: Black Box Reverse Engineering
An adversary discovers the structure, function, and composition of a type of computer software through black box analysis techniques. 'Black Box' methods involve interacting with the software indirectly, in the absence of direct access to the executable object. Such analysis typically involves interacting with the software at the boundaries of where the software interfaces with a larger execution environment, such as input-output vectors, libraries, or APIs. Black Box Reverse Engineering also refers to gathering physical side effects of a hardware device, such as electromagnetic radiation or sounds.