Reachable Assertion

Affecting krb5 package, versions *

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

Overview

A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.

References

CVSS Score

5.3
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE
CVE-2018-20217
CWE
CWE-617
Snyk ID
SNYK-UBUNTU1804-KRB5-396230
Disclosed
26 Dec, 2018
Published
26 Dec, 2018