CVE-2018-5709 Information

Description

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable \dbentry-n_key_data\ in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a \u4\ variable to it which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://github.com/poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Integer20Overflow

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5