Common Weakness Enumeration

CWE-295

Allowed

Improper Certificate Validation

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product does not validate, or incorrectly validates, a certificate.

1908 vulnerabilities reference this CWE, most recent first.

CVE-2023-28321 (GCVE-0-2023-28321)

Vulnerability from cvelistv5 – Published: 2023-05-26 00:00 – Updated: 2025-01-15 15:54
VLAI
Summary
An improper certificate validation vulnerability exists in curl <v8.1.0 in the way it supports matching of wildcard patterns when listed as "Subject Alternative Name" in TLS server certificates. curl can be built to use its own name matching function for TLS rather than one provided by a TLS library. This private wildcard matching function would match IDN (International Domain Name) hosts incorrectly and could as a result accept patterns that otherwise should mismatch. IDN hostnames are converted to puny code before used for certificate checks. Puny coded names always start with `xn--` and should not be allowed to pattern match, but the wildcard check in curl could still check for `x*`, which would match even though the IDN name most likely contained nothing even resembling an `x`.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation (CWE-295)
Assigner
References
Impacted products
Vendor Product Version
n/a https://github.com/curl/curl Affected: Fixed in 8.1.0
Show details on NVD website
To clipboard 

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CVE-2023-28093 (GCVE-0-2023-28093)

Vulnerability from cvelistv5 – Published: 2023-04-10 00:00 – Updated: 2025-02-07 20:12
VLAI
Summary
A user with a compromised configuration can start an unsigned binary as a service.
Severity
7.5 (High)
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certification Validation
Assigner
References
Impacted products
Vendor Product Version
Pegasystems RPA: Synchronization Engine Affected: 3.1.1 , < unspecified (custom)
Affected: unspecified , < 3.1.28 (custom)
Create a notification for this product.
Credits
Skyler Knecht and William Martin from the Adversarial Security Practice at Navy Federal Credit Union
Show details on NVD website
To clipboard 

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CVE-2023-24461 (GCVE-0-2023-24461)

Vulnerability from cvelistv5 – Published: 2023-05-03 14:31 – Updated: 2025-01-29 21:41
VLAI
Title
BIG-IP Edge Client for Windows and macOS vulnerability
Summary
An improper certificate validation vulnerability exists in the BIG-IP Edge Client for Windows and macOS and may allow an attacker to impersonate a BIG-IP APM system.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
f5
References
Impacted products
Vendor Product Version
F5 BIG-IP Edge Client Affected: 7.2.2 , < 7.2.4.1 (semver)
Create a notification for this product.
Date Public
2023-05-03 14:00
Credits
F5 acknowledges Gianluca Palma of Engineering Ingegneria Informatica S.p.A. for bringing this issue to our attention and following the highest standards of coordinated disclosure.
Show details on NVD website
To clipboard 

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CVE-2023-23546 (GCVE-0-2023-23546)

Vulnerability from cvelistv5 – Published: 2023-07-06 14:53 – Updated: 2024-08-02 10:35
VLAI
Summary
A misconfiguration vulnerability exists in the urvpn_client functionality of Milesight UR32L v32.3.0.5. A specially-crafted man-in-the-middle attack can lead to increased privileges. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.
Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Milesight UR32L Affected: v32.3.0.5
Create a notification for this product.
Credits
Discovered by Francesco Benvenuto of Cisco Talos.
Show details on NVD website
To clipboard 

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CVE-2023-22642 (GCVE-0-2023-22642)

Vulnerability from cvelistv5 – Published: 2023-04-11 16:07 – Updated: 2024-10-23 14:28
VLAI
Summary
An improper certificate validation vulnerability [CWE-295] in FortiAnalyzer and FortiManager 7.2.0 through 7.2.1, 7.0.0 through 7.0.5, 6.4.8 through 6.4.10 may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the device and the remote FortiGuard server hosting outbreakalert ressources.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Execute unauthorized code or commands
Assigner
References
Impacted products
Vendor Product Version
Fortinet FortiAnalyzer Affected: 7.2.0 , ≤ 7.2.1 (semver)
Affected: 7.0.0 , ≤ 7.0.5 (semver)
Affected: 6.4.8 , ≤ 6.4.10 (semver)
Affected: 6.4.0 , < 6.4.* (semver)
Create a notification for this product.
Fortinet FortiManager Affected: 7.2.0 , ≤ 7.2.1 (semver)
Affected: 7.0.0 , ≤ 7.0.5 (semver)
Affected: 6.4.8 , ≤ 6.4.10 (semver)
Affected: 6.4.0 , < 6.4.* (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2023-20881 (GCVE-0-2023-20881)

Vulnerability from cvelistv5 – Published: 2023-05-19 00:00 – Updated: 2025-01-21 20:04
VLAI
Summary
Cloud foundry instances having CAPI version between 1.140 and 1.152.0 along with loggregator-agent v7+ may override other users syslog drain credentials if they're aware of the client certificate used for that syslog drain. This applies even if the drain has zero certs. This would allow the user to override the private key and add or modify a certificate authority used for the connection.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
n/a Cloud Controller API Affected: Cloud Foundry cloud controller API versions between 1.140 and 1.152.0 and loggregator-agent v7+
Show details on NVD website
To clipboard 

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CVE-2023-6680 (GCVE-0-2023-6680)

Vulnerability from cvelistv5 – Published: 2023-12-15 16:02 – Updated: 2026-06-06 04:06
VLAI
Title
Improper Certificate Validation in GitLab
Summary
An improper certificate validation issue in Smartcard authentication in GitLab EE affecting all versions from 11.6 prior to 16.4.4, 16.5 prior to 16.5.4, and 16.6 prior to 16.6.2 allows an attacker to authenticate as another user given their public key if they use Smartcard authentication. Smartcard authentication is an experimental feature and has to be manually enabled by an administrator.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
GitLab GitLab Affected: 11.6 , < 16.4.4 (semver)
Affected: 16.5 , < 16.5.4 (semver)
Affected: 16.6 , < 16.6.2 (semver)
    cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Thanks Lucas Serrano from PEReN (@LSerranoPEReN) for reporting this vulnerability
Show details on NVD website
To clipboard 

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CVE-2023-6058 (GCVE-0-2023-6058)

Vulnerability from cvelistv5 – Published: 2024-10-18 07:52 – Updated: 2024-10-18 15:26
VLAI
Title
HTTPS Certificate Validation Issue in Bitdefender Safepay (VA-11167)
Summary
A vulnerability has been identified in Bitdefender Safepay's handling of HTTPS connections. The issue arises when the product blocks a connection due to an untrusted server certificate but allows the user to add the site to exceptions, resulting in the product trusting the certificate for subsequent HTTPS scans. This vulnerability allows an attacker to perform a Man-in-the-Middle (MITM) attack by using a self-signed certificate, which the product will trust after the site has been added to exceptions. This can lead to the interception and potential alteration of secure communications.
Severity
8.6 (High)
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Bitdefender Total Security Affected: 0 , < 27.0.25.115 (custom)
Create a notification for this product.
bitdefender total_security Affected: 0 , < 27.0.25.115 (custom)
    cpe:2.3:a:bitdefender:total_security:*:*:*:*:*:*:*:*
 Create a notification for this product.
Date Public
2024-10-18 07:45
Show details on NVD website
To clipboard 

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CVE-2023-6057 (GCVE-0-2023-6057)

Vulnerability from cvelistv5 – Published: 2024-10-18 07:38 – Updated: 2024-11-21 16:25
VLAI
Title
Insecure Trust of DSA-Signed Certificates in Bitdefender Total Security HTTPS Scanning (VA-11166)
Summary
A vulnerability has been discovered in Bitdefender Total Security HTTPS scanning functionality that results in the improper trust of certificates issued using the DSA signature algorithm. The product does not properly check the certificate chain, allowing an attacker to establish MITM SSL connections to arbitrary sites using a DSA-signed certificate.
Severity
8.6 (High)
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Bitdefender Total Security Affected: 0 , < 27.0.25.115 (custom)
Create a notification for this product.
bitdefender total_security Affected: 0 , < 27.0.25.115 (custom)
    cpe:2.3:a:bitdefender:total_security:-:*:*:*:*:*:*:*
 Create a notification for this product.
Date Public
2024-10-18 07:33
Show details on NVD website
To clipboard 

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CVE-2023-6056 (GCVE-0-2023-6056)

Vulnerability from cvelistv5 – Published: 2024-10-18 07:31 – Updated: 2024-10-18 15:27
VLAI
Title
Insecure Trust of Self-Signed Certificates in Bitdefender Total Security HTTPS Scanning (VA-11164)
Summary
A vulnerability has been discovered in Bitdefender Total Security HTTPS scanning functionality that results in the improper trust of self-signed certificates. The product is found to trust certificates signed with the RIPEMD-160 hashing algorithm without proper validation, allowing an attacker to establish MITM SSL connections to arbitrary sites.
Severity
8.6 (High)
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
BItdefender Total Security Affected: 0 , < 27.0.25.115 (custom)
Create a notification for this product.
bitdefender total_security Affected: 0 , < 27.0.25.115 (custom)
    cpe:2.3:a:bitdefender:total_security:*:*:*:*:*:*:*:*
 Create a notification for this product.
Date Public
2024-10-18 07:26
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design Implementation

Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.

Mitigation
Implementation

If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.

CAPEC-459: Creating a Rogue Certification Authority Certificate

An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.

CAPEC-475: Signature Spoofing by Improper Validation

An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.

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