QID 670989

Date Published: 2021-11-24

QID 670989: EulerOS Security Update for c-ares (EulerOS-SA-2021-2652)

c-ares is a C library that performs DNS requests and name resolves asynchronously. c-ares is a fork of the library named 'ares', written by Greg Hudson at MIT. Security Fix(es): A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.(CVE-2021-3672)
Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

An arbitrary attacker may exploit this vulnerability to compromise the system.

  • CVSS V3 rated as High - 7.3 severity.
  • CVSS V2 rated as High - 7.5 severity.
  • Solution
    The Vendor has released a security update to fix the vulnerability. For more information please visit EulerOS-SA-2021-2652 for updates and patch information

    CVEs related to QID 670989

    Software Advisories
    Advisory ID Software Component Link
    EulerOS-SA-2021-2652 EulerOS V2.0SP5 URL Logo developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2021-2652