Allocation of Resources Without Limits or Throttling

Affecting glibc package, versions *

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Overview

The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.

References

CVSS Score

5.9
low severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    High
  • Availability
    None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVE
CVE-2017-12132
CWE
CWE-770
Snyk ID
SNYK-UBUNTU1604-GLIBC-356561
Disclosed
01 Aug, 2017
Published
01 Aug, 2017