Kerberos
CVE-2018-20217
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V16 - Security Logging and Error Handling Reachable assertion handling
|
| Impact | CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, high complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-617. 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. Affected products include: Mit Kerberos, Debian Debian Linux. Version information: before 1.17..
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Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
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What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
The kerberos package before 1.0.0 for Node.js allows arbitrary code execution and privilege escalation via injection of
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. Rated high severity (CVSS 7.5), this vulnerability is
Authentication bypass in the Keycloak (Red Hat Build of Keycloak) Kerberos federation provider lets an attacker on the s
In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending inval
MIT Kerberos 5 (aka krb5) 1.7.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (buffe
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. Rated medium severity (CVSS 6.5), this vulnerability
An unspecified third-party database module for the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.10.x all
plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.1, when the KD
Exploit-DB