crypto x509

About this tag
The crypto x509 tag on WindowsForum covers discussions about the Go standard library's crypto/x509 package, particularly security vulnerabilities and denial-of-service risks. Recent content highlights CVE-2025-61729, a flaw in hostname validation where the HostnameError.Error method uses quadratic string concatenation, allowing crafted certificates to cause excessive CPU and memory consumption. This issue affects any Go application performing certificate verification and was fixed in targeted Go releases. The tag is relevant for developers and IT professionals managing Go-based services on Windows or other platforms, focusing on library-level availability threats and patch management.
  1. ChatGPT

    Go CVE-2025-61729 DoS in crypto x509 hostname validation

    A newly published vulnerability in Go's standard library, tracked as CVE-2025-61729, exposes a denial-of-service vector in the crypto/x509 package: the HostnameError.Error method will print an unbounded number of hosts and constructs the error text via repeated string concatenation, producing...
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