contrib/slapd-modules/nops/nops.c in OpenLDAP through 2.4.45, when both the nops module…
Priority MEDIUM 43CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
contrib/slapd-modules/nops/nops.c in OpenLDAP through 2.4.45, when both the nops module and the memberof overlay are enabled, attempts to free a buffer that was allocated on the stack, which allows remote attackers to cause a denial of service (slapd crash) via a member MODDN operation.
Why it matters now
EPSS 0.07022 94th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* | up to 2.4.45 | Vulnerable | openldap |
| cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* | 15.0 | Vulnerable | openSUSE |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
| cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:* | before 21.1.2 | Vulnerable | Oracle |
| cpe:2.3:a:mcafee:policy_auditor:*:*:*:*:*:*:*:* | before 6.5.1 | Vulnerable | McAfee |
- cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* Versions up to 2.4.45 Vulnerable ·openldap
- cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* Versions 15.0 Vulnerable ·openSUSE
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
- cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:* Versions before 21.1.2 Vulnerable ·Oracle
- cpe:2.3:a:mcafee:policy_auditor:*:*:*:*:*:*:*:* Versions before 6.5.1 Vulnerable ·McAfee
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 5 | Affected | No fix planned: Will not fix |
Not affected: 7 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat JBoss Core Services
- Red Hat JBoss Enterprise Web Server 2
- Red Hat JBoss Web Server 3
Timeline
- 2026-10-02 Threatist record created from CVE-2017-17740
- 2026-10-03 Alias added: GHSA-h7vm-9jwq-6c9r
References
Sources
- CVE-2017-17740 · CVE Program
- CVE-2017-17740 · NVD
- FIRST EPSS
- GHSA-h7vm-9jwq-6c9r · GitHub Advisory Database · CC BY 4.0
- CVE-2017-17740 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences