libldb: LDAP server crash via distinguishedName
Published Aug 22, 2018
6.5
MEDIUMCVSS 3.0
EPSS 10.84%
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
Affected products
-
- Version 4.8.0 and newerStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The Samba Team | Samba | n/a |
|
No data.
Red Hat Enterprise Linux 5
libldb
Not affected
Red Hat Enterprise Linux 6
libldb
Not affected
Red Hat Enterprise Linux 7
libldb
Not affected
Red Hat Enterprise Linux 8
libldb
Not affected
Red Hat Storage 3
libldb
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libldb | Not affected | n/a |
| Red Hat Enterprise Linux 6 | libldb | Not affected | n/a |
| Red Hat Enterprise Linux 7 | libldb | Not affected | n/a |
| Red Hat Enterprise Linux 8 | libldb | Not affected | n/a |
| Red Hat Storage 3 | libldb | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This flaw only affects libldb/samba when configured as Active Directory Domain Controller. Versions of samba in Red Hat Enterprise Linux 6 and 7 do not support this configuration and therefore are not affected by this flaw.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:A/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.84% (0.10839) | 95.73th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.84% (0.10839) | 95.27th | v5 (v2026.06.15) |
| Mar 10, 2026 | 14.50% (0.14503) | 94.31th | v4 (v2025.03.14) |
| Nov 21, 2025 | 17.35% (0.17346) | 94.78th | v4 (v2025.03.14) |
| Nov 18, 2025 | 16.13% (0.16125) | 94.24th | v4 (v2025.03.14) |
| Sep 23, 2025 | 17.35% (0.17346) | 94.83th | v4 (v2025.03.14) |
| Mar 19, 2025 | 15.21% (0.15208) | 93.80th | v4 (v2025.03.14) |
| Mar 17, 2025 | 18.75% (0.18754) | 94.80th | v4 (v2025.03.14) |
| Dec 17, 2024 | 68.01% (0.68012) | 98.13th | v3 (v2023.03.01) |
| Feb 22, 2024 | 78.63% (0.78633) | 98.16th | v3 (v2023.03.01) |
| Jan 13, 2024 | 81.01% (0.81009) | 98.05th | v3 (v2023.03.01) |
| Aug 16, 2023 | 83.02% (0.83020) | 97.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 84.16% (0.84162) | 97.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.81% (0.01806) | 35.10th | v1 |
| Jan 6, 2022 | 1.81% (0.01806) | 34.40th | v1 |
| Sep 1, 2021 | 1.81% (0.01806) | 74.37th | v1 |
| Apr 14, 2021 | 1.81% (0.01806) | 0.00th | v1 |
References (10)
- http://www.securityfocus.com/bid/105082 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-1140 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1580230 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1140 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=13374 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-1140
- https://security.gentoo.org/glsa/202003-52 vendor-advisoryx_refsource_GENTOO
- https://security.netapp.com/advisory/ntap-20180814-0001/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-1140
- https://www.samba.org/samba/security/CVE-2018-1140.html x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105082 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-1140 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1580230 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1140 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://bugzilla.samba.org/show_bug.cgi?id=13374 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-1140 | ||
| https://security.gentoo.org/glsa/202003-52 | vendor-advisoryx_refsource_GENTOO | |
| https://security.netapp.com/advisory/ntap-20180814-0001/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-1140 | ||
| https://www.samba.org/samba/security/CVE-2018-1140.html | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.