CVE-2025-61727

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN .example.com...

AZL-71635 CVE-2025-61727 affecting package msft-golang 1.24.13-1

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN .example.com...

UBUNTU-CVE-2025-61727

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN .example.com...

CVE-2025-61727 Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN .example.com...

CVE-2025-61727

The CVE-2025-61727 issue stems from crypto/x509: an excluded subdomain constraint in a certificate chain does not restrict wildcard SANs in the leaf certificate (e.g., excluding test.example.com does not block SAN *.example.com). This can allow a leaf certificate to claim a wildcard SAN despite t...

CVE-2025-61727 Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN .example.com...

Google Go 安全漏洞

Google Go is a static strongly typed, compiled, concatenated, and garbage-collected programming language from Google USA. A security vulnerability exists in Google Go that stems from a subdomain constraint excluded from the crypto/x509 certificate chain that does not restrict the use of the...

GO-2025-4175 Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509

An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN .example.com...

Microsoft PlayReady Activation Protocol Issues

This advisory builds on prior disclosed work in 2022 regarding Microsoft PlayReady protocol issues that can lead to leaf certificate generation using fake identities...

PT-2023-15779 · Openbsd +1 · Openbsd +2

Name of the Vulnerable Software and Affected Versions: LibreSSL versions prior to 3.6.1 OpenBSD versions prior to 7.2 errata 001 Description: An issue was discovered in the x509/x509 verify.c file. The function x509 verify ctx add chain does not store errors that occur during leaf certificate...

SUSE CVE-2023-0465

Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that...

UBUNTU-CVE-2023-0465

Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that...

K16937: OpenSSL vulnerability CVE-2015-1793

Security Advisory Description Description The X509verifycert function in crypto/x509/x509vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints CA values during identification of alternative certificate chains, which allows remote attackers to spoof ...

Google Warns of a New Way Hackers Can Make Malware Undetectable on Windows

Cybersecurity researchers have disclosed a novel technique adopted by a threat actor to deliberately evade detection with the help of malformed digital signatures of its malware payloads. "Attackers created malformed code signatures that are treated as valid by Windows but are not able to be...

Hostname verification skipped when custom root certs used

If custom root certificates were registered with a ClientBuilder, the hostname of the target server would not be validated against its presented leaf certificate. This issue was fixed by properly configuring the trust evaluation logic to perform that check...

Chain Certificate Forgery

OpenSSL is vulnerable to chain certificate forgery. A malicious user can bypass the certificate verification process, enabling the user to use a valid leaf certificate and "issue" an invalid certificate...

OpenSSL Alternative Chains Certificate Forgery MITM Proxy

This module exploits a logic error in OpenSSL by impersonating the server and sending a specially-crafted chain of certificates, resulting in certain checks on untrusted certificates to be bypassed on the client, allowing it to use a valid leaf certificate as a CA certificate to sign a fake...

CVE-2015-1793

The X509verifycert function in crypto/x509/x509vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger...

DEBIAN-CVE-2015-1793

The X509verifycert function in crypto/x509/x509vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger...

UBUNTU-CVE-2015-1793

The X509verifycert function in crypto/x509/x509vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger...