6.5

CVE-2018-1140: samba Improper Input Validation

Modified
AliasesALPINE-CVE-2018-1140UBUNTU-CVE-2018-1140DEBIAN-CVE-2018-1140
Published 22-08-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-1140 is a medium (CVSS 6.5) Improper Input Validation vulnerability in samba. EPSS estimates a 10.84% chance of exploitation in the next 30 days, higher than 95.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.0 (CVE.org)
EPSS score
10.84%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2024:10911-1OPENSUSE-SU-2024:11365-1SUSE-SU-2018:2318-1

Timeline

  1. 22-08-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A missing input sanitization flaw was found in the implementation of LDP database used for the LDAP server. An attacker could use this flaw to cause a denial of service against a samba server, used as a Active Directory Domain Controller. All versions of Samba from 4.8.0 onwards are vulnerable

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

10.84%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

No change 0.00 pp

From 10.84% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine2 products
  • ldb< 1.3.5-r0 | < 1.3.0-r1
  • samba≥ 4.8.0, < 4.8.4-r0
Debian1 product
  • samba< 2:4.8.4+dfsg-1
Samba1 product
The samba team1 product
Ubuntu1 product
  • samba< 2:4.3.11+dfsg-0ubuntu0.14.04.14 | < 2:4.3.11+dfsg-0ubuntu0.16.04.13 | < 2:4.7.6+dfsg~ubuntu-0ubuntu2

5 vendors · 6 products

References

10 links