CWE-203
Observable Discrepancy
Description
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
Hierarchy (View 1000)
Related attack patterns (CAPEC)
CAPEC-189
CVEs mapped to this weakness (762)
page 9 of 39| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2024-11084 | Med | 0.41 | — | 0.00 | Apr 15, 2025 | Helix ALM prior to 2025.1 returns distinct error responses during authentication, allowing an attacker to determine whether a username exists. | ||
| CVE-2024-2464 | Med | 0.41 | 6.3 | 0.00 | Mar 21, 2024 | 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. | ||
| CVE-2023-51437 | Hig | 0.41 | 7.4 | 0.01 | Feb 7, 2024 | Observable timing discrepancy vulnerability in Apache Pulsar SASL Authentication Provider can allow an attacker to forge a SASL Role Token that will pass signature verification. Users are recommended to upgrade to version 2.11.3, 3.0.2, or 3.1.1 which fixes the issue. Users… | ||
| CVE-2019-10764 | Hig | 0.41 | 7.4 | 0.01 | Nov 18, 2019 | In elliptic-php versions priot to 1.0.6, Timing attacks might be possible which can result in practical recovery of the long-term private key generated by the library under certain conditions. Leakage of a bit-length of the scalar during scalar multiplication is possible on an… | ||
| CVE-2019-13627 | Med | 0.41 | 6.3 | 0.01 | Sep 25, 2019 | It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library. Version affected: 1.8.4-5, 1.7.6-2+deb9u3, and 1.6.3-2+deb8u4. Versions fixed: 1.8.5-2 and 1.6.3-2+deb8u7. | ||
| CVE-2024-8994 | Med | 0.40 | 6.2 | 0.00 | Dec 26, 2024 | Some Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak. | ||
| CVE-2024-8993 | Med | 0.40 | 6.2 | 0.00 | Dec 26, 2024 | Some Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak. | ||
| CVE-2024-47153 | Med | 0.40 | 6.2 | 0.00 | Dec 26, 2024 | Some Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak. | ||
| CVE-2022-4304 | Med | 0.40 | 5.9 | 0.16 | Feb 8, 2023 | A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of… | ||
| CVE-2022-0823 | Med | 0.40 | 6.2 | 0.00 | Jun 9, 2022 | An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the password by using a timing side-channel attack. | ||
| CVE-2022-1318 | Med | 0.40 | 6.2 | 0.00 | Apr 20, 2022 | Hills ComNav version 3002-19 suffers from a weak communication channel. Traffic across the local network for the configuration pages can be viewed by a malicious actor. The size of certain communications packets are predictable. This would allow an attacker to learn the state of… | ||
| CVE-2021-45901 | Med | 0.39 | 5.3 | 0.14 | Feb 10, 2022 | The password-reset form in ServiceNow Orlando provides different responses to invalid authentication attempts depending on whether the username exists. | ||
| CVE-2021-44848 | Med | 0.39 | 5.3 | 0.23 | Dec 13, 2021 | In Cibele Thinfinity VirtualUI before 3.0, /changePassword returns different responses for invalid authentication requests depending on whether the username exists. | ||
| CVE-2021-38153 | Med | 0.39 | 5.9 | 0.06 | Sep 22, 2021 | Some components in Apache Kafka use `Arrays.equals` to validate a password or key, which is vulnerable to timing attacks that make brute force attacks for such credentials more likely to be successful. Users should upgrade to 2.8.1 or higher, or 3.0.0 or higher where this… | ||
| CVE-2021-27342 | Med | 0.39 | 5.9 | 0.05 | May 17, 2021 | An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack | ||
| CVE-2020-1926 | Med | 0.39 | 5.9 | 0.02 | Mar 16, 2021 | Apache Hive cookie signature verification used a non constant time comparison which is known to be vulnerable to timing attacks. This could allow recovery of another users cookie signature. The issue was addressed in Apache Hive 2.3.8 | ||
| CVE-2020-14002 | Med | 0.39 | 5.9 | 0.03 | Jun 29, 2020 | PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). | ||
| CVE-2019-16516 | Med | 0.39 | 5.3 | 0.19 | Jan 23, 2020 | An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing an unauthenticated attacker to determine with certainty if an account exists for a given username. | ||
| CVE-2015-0837 | Med | 0.39 | 5.9 | 0.02 | Nov 29, 2019 | The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack." | ||
| CVE-2019-16863 | Med | 0.39 | 5.9 | 0.03 | Nov 14, 2019 | STMicroelectronics ST33TPHF2ESPI TPM devices before 2019-09-12 allow attackers to extract the ECDSA private key via a side-channel timing attack because ECDSA scalar multiplication is mishandled, aka TPM-FAIL. |
- risk 0.41cvss —epss 0.00
Helix ALM prior to 2025.1 returns distinct error responses during authentication, allowing an attacker to determine whether a username exists.
- risk 0.41cvss 6.3epss 0.00
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.
- risk 0.41cvss 7.4epss 0.01
Observable timing discrepancy vulnerability in Apache Pulsar SASL Authentication Provider can allow an attacker to forge a SASL Role Token that will pass signature verification. Users are recommended to upgrade to version 2.11.3, 3.0.2, or 3.1.1 which fixes the issue. Users…
- risk 0.41cvss 7.4epss 0.01
In elliptic-php versions priot to 1.0.6, Timing attacks might be possible which can result in practical recovery of the long-term private key generated by the library under certain conditions. Leakage of a bit-length of the scalar during scalar multiplication is possible on an…
- risk 0.41cvss 6.3epss 0.01
It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library. Version affected: 1.8.4-5, 1.7.6-2+deb9u3, and 1.6.3-2+deb8u4. Versions fixed: 1.8.5-2 and 1.6.3-2+deb8u7.
- risk 0.40cvss 6.2epss 0.00
Some Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.
- risk 0.40cvss 6.2epss 0.00
Some Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.
- risk 0.40cvss 6.2epss 0.00
Some Honor products are affected by information leak vulnerability, successful exploitation could cause the information leak.
- risk 0.40cvss 5.9epss 0.16
A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext across a network in a Bleichenbacher style attack. To achieve a successful decryption an attacker would have to be able to send a very large number of…
- risk 0.40cvss 6.2epss 0.00
An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the password by using a timing side-channel attack.
- risk 0.40cvss 6.2epss 0.00
Hills ComNav version 3002-19 suffers from a weak communication channel. Traffic across the local network for the configuration pages can be viewed by a malicious actor. The size of certain communications packets are predictable. This would allow an attacker to learn the state of…
- risk 0.39cvss 5.3epss 0.14
The password-reset form in ServiceNow Orlando provides different responses to invalid authentication attempts depending on whether the username exists.
- risk 0.39cvss 5.3epss 0.23
In Cibele Thinfinity VirtualUI before 3.0, /changePassword returns different responses for invalid authentication requests depending on whether the username exists.
- risk 0.39cvss 5.9epss 0.06
Some components in Apache Kafka use `Arrays.equals` to validate a password or key, which is vulnerable to timing attacks that make brute force attacks for such credentials more likely to be successful. Users should upgrade to 2.8.1 or higher, or 3.0.0 or higher where this…
- risk 0.39cvss 5.9epss 0.05
An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
- risk 0.39cvss 5.9epss 0.02
Apache Hive cookie signature verification used a non constant time comparison which is known to be vulnerable to timing attacks. This could allow recovery of another users cookie signature. The issue was addressed in Apache Hive 2.3.8
- risk 0.39cvss 5.9epss 0.03
PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).
- risk 0.39cvss 5.3epss 0.19
An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing an unauthenticated attacker to determine with certainty if an account exists for a given username.
- risk 0.39cvss 5.9epss 0.02
The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."
- risk 0.39cvss 5.9epss 0.03
STMicroelectronics ST33TPHF2ESPI TPM devices before 2019-09-12 allow attackers to extract the ECDSA private key via a side-channel timing attack because ECDSA scalar multiplication is mishandled, aka TPM-FAIL.