PT-2018-17103 · Mit+1 · Mit Kerberos 5+1

Published 2018-01-16 · Updated 2026-05-27 · CVE-2018-5709

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: MIT Kerberos 5 (aka krb5) versions prior to 1.17

Description: An issue was discovered where a variable dbentry->n key data in kadmin/dbutil/dump.c, intended for 16-bit data, was assigned a u4 variable meant for 32-bit data. This could allow an attacker to affect other database artifacts, as a Kerberos database dump file contains trusted data.

Recommendations: For versions prior to 1.17, update to version 1.17 or later to resolve the issue. As a temporary workaround, consider restricting access to the database dump files to minimize the risk of exploitation.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2018-5709

ECHO-F800-2733-E5C3

Affected Products

Debian

Mit Kerberos 5

References · 12

• https://security-tracker.debian.org/tracker/CVE-2018-5709 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-5709 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5709 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2018-5709 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2018-5709 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-5709 · Security Note
• https://osv.dev/vulnerability/CVE-2018-5709 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-5709 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-5709 · Security Note
• https://github.com/poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Integer%20Overflow · Note
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E · Note
• https://security.alpinelinux.org/vuln/CVE-2018-5709 · Note