7.5

CVE-2018-16860: heimdal_project heimdal

CVSS: 7.5v3.0HighModified
AliasesALPINE-CVE-2018-16860UBUNTU-CVE-2018-16860USN-3976-1
Published 31-07-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-16860 is a high (CVSS 7.5) vulnerability in heimdal_project heimdal. EPSS estimates a 2.49% chance of exploitation in the next 30 days, higher than 84.3% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (CVE.org)
EPSS score
2.49%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 5
DSA-4455-1OPENSUSE-SU-2019:1682-1OPENSUSE-SU-2019:1688-1OPENSUSE-SU-2019:1888-1OPENSUSE-SU-2024:11365-1USN-5675-1

Timeline

  1. 31-07-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in samba's Heimdal KDC implementation, versions 4.8.x up to, excluding 4.8.12, 4.9.x up to, excluding 4.9.8 and 4.10.x up to, excluding 4.10.3, when used in AD DC mode. A man in the middle attacker could use this flaw to intercept the request to the KDC and replace the user name (principal) in the request with any desired user name (principal) that exists in the KDC effectively obtaining a ticket for that principal.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

2.49%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

0.00 pp

From 2.49% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.49%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Alpine2 products
  • heimdal≥ 0.8, < 7.5.0-r4 | ≥ 0.8, < 7.5.3-r4 | ≥ 0.8, < 7.4.0-r3 | ≥ 0.8, < 7.5.0-r2 | ≥ 0.8, < 7.5.0-r3
  • samba≥ 4.8.0, < 4.10.3-r0 | ≥ 4.8.0, < 4.8.12-r0
Debian2 products
  • heimdal< 7.5.0+dfsg-3
  • samba< 2:4.9.5+dfsg-4 | < 2:4.5.16+dfsg-1+deb9u2 | < 2:4.2.14+dfsg-0+deb8u13
Ubuntu2 products
  • heimdal< 1.6~git20131207+dfsg-1ubuntu1.2+esm1 | < 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm1 | < 7.5.0+dfsg-1ubuntu0.1
  • samba< 2:4.3.11+dfsg-0ubuntu0.16.04.20 | < 2:4.7.6+dfsg~ubuntu-0ubuntu2.10 | < 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm1
Heimdal_project1 product
Samba1 product
  • sambaEOL4.8.x up to, excluding 4.8.12 | 4.9.x up to, excluding 4.9.8 | 4.10.x up to, excluding 4.10.3 | ≥ 4.8.0, < 4.8.12 | ≥ 4.9.0, < 4.9.8 | ≥ 4.10.0, < 4.10.3

5 vendors · 8 products

References

24 links
Show all 24 references