QID 356347

Date Published: 2023-10-18

QID 356347: Amazon Linux Security Advisory for c-ares : AL2012-2023-450

Package updates are available for Amazon Linux that fix the following vulnerabilities:
CVE-2023-32067:
Denial of Service. Attack Steps: The target resolver sends a query The attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. (this is only valid for TCP connections, UDP is connection-less) Current resolution fails, DoS attack is achieved.

Successful exploitation of this vulnerability could lead to a security breach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Administrators are advised to apply the appropriate software updates.
    Vendor References

    CVEs related to QID 356347

    CVE-2023-32067 |
    Software Advisories
    Advisory ID Software Component Link
    AL2012-2023-450 Amazon Linux Bare Metal URL Logo docs.aws.amazon.com/AWSEC2/latest/UserGuide/install-updates.html
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