{
  "id": "openEuler-SA-2024-1489",
  "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1489",
  "title": "An update for systemd is now available for openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2 and openEuler-22.03-LTS-SP3",
  "severity": "High",
  "description": "systemd is a system and service manager that runs as PID 1 and starts the rest of the system.\r\n\r\nSecurity Fix(es):\r\n\r\nCertain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the \"KeyTrap\" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.(CVE-2023-50387)\r\n\r\nThe Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the \"NSEC3\" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.(CVE-2023-50868)",
  "cves": [
    {
      "id": "CVE-2023-50868",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-50868",
      "severity": "High"
    }
  ]
}