{
  "id": "openEuler-SA-2022-1889",
  "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2022-1889",
  "title": "An update for gnutls is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3 and openEuler-22.03-LTS",
  "severity": "Moderate",
  "description": "GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures.The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code.\r\n\r\nSecurity Fix(es):\r\n\r\nA NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.(CVE-2021-4209)",
  "cves": [
    {
      "id": "CVE-2021-4209",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4209",
      "severity": "Moderate"
    }
  ]
}