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CVE-2018-1089

22
FAUCET Score

CVE-2018-1089 describes a buffer overflow vulnerability in 389-ds-base versions prior to 1.4.0.9, 1.3.8.1, and 1.3.6.15, affecting products like Debian, Fedora, and Red Hat. This flaw allows a remote, unauthenticated attacker to crash the ns-slapd service, leading to a denial of service, by sending a specially crafted LDAP request with long, escaped search filters. With a CVSS score of 7.5 (HIGH), the attack requires no user interaction or privileges, but only impacts availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.3.6.0, < 1.3.6.15CPE matchmatch criteria
cpe:2.3:a:fedoraproject:389_directory_server:*:*:*:*:*:*:*:*
>= 1.4.0.0, < 1.4.0.9CPE matchmatch criteria
cpe:2.3:a:fedoraproject:389_directory_server:*:*:*:*:*:*:*:*
1.3.8.1CPE matchmatch criteria
cpe:2.3:a:fedoraproject:389_directory_server:1.3.8.1:*:*:*:*:*:*:*
1.3.8.2CPE matchmatch criteria
cpe:2.3:a:fedoraproject:389_directory_server:1.3.8.2:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.24%
Probability of exploitation in next 30 days
EPSS Percentile
90.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0424 is in the 82nd percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: 389-ds-base-0:1.2.11.15-95.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: 389-ds-base-0:1.3.7.5-21.el7_5
View patch

Vendor Advisories (1)

redhatCVE-2018-1089Important

389-ds-base: ns-slapd crash via large filter value in ldapsearch

May 7, 2018

References

access.redhat.com / errata/RHSA-2018:1364
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1380
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
lists.debian.org / debian-lts-announce/2018/07/msg00018.html
Mailing ListThird Party Advisory
securityfocus.com / bid/104137
Third Party AdvisoryVDB Entry