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CVE-2026-27145: Go standard library crypto/x509, невалидиран вход

7.5

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.

Засегнати продукти

  • Go standard library crypto/x509: преди 1.25.11; 1.26.0-0 преди 1.26.4
  • Red Hat: още 130 продукта, добавени от Red Hat

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Вид слабост

История

  • 2 юни 2026 Публикувано

Други уязвимости в Go standard library crypto/x509

Първоизточници

CVE-2026-27145: Go standard library crypto/x509, невалидиран вход | freedomonline.bg