Reachable assertion in openldap
Priority LOW 38CWE-617Published · 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
- Partial Red Hat: 7 fixed, 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-617.
Summary
A flaw was found in OpenLDAP in versions before 2.4.56. This flaw allows an attacker who sends a malicious packet processed by OpenLDAP to force a failed assertion in csnNormalize23(). The highest threat from this vulnerability is to system availability.
Why it matters now
EPSS 0.02728 86th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 7 fixed, 5 without a fix
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 |
|---|---|---|---|---|---|
| — | openldap | openldap 2.4.56 | — | No fix listed | CNA |
- openldap Vendor— Affected openldap 2.4.56 Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* | before 2.4.56 | Vulnerable | openldap |
| cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:jboss_enterprise_application_platform:5.0.0:*:*:*:*:*:*:* | 5.0.0 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:jboss_enterprise_web_server:2.0.0:*:*:*:*:*:*:* | 2.0.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
- cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:* Versions before 2.4.56 Vulnerable ·openldap
- cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
- cpe:2.3:a:redhat:jboss_enterprise_application_platform:5.0.0:*:*:*:*:*:*:* Versions 5.0.0 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:jboss_enterprise_web_server:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
Remediation
Red Hat 1 advisory
- RHSA-2022:0621 Released 2022-02-22 · Red Hat rating Moderateopenldap security update
- Red Hat Enterprise Linux Client (v. 7) openldap-2.4.44-25.el7_9, openldap-clients-2.4.44-25.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) openldap-devel-2.4.44-25.el7_9, openldap-servers-2.4.44-25.el7_9, openldap-servers-sql-2.4.44-25.el7_9
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) openldap-devel-2.4.44-25.el7_9, openldap-servers-2.4.44-25.el7_9, openldap-servers-sql-2.4.44-25.el7_9
- Red Hat Enterprise Linux Server (v. 7) openldap-2.4.44-25.el7_9, openldap-2.4.44-25.el7_9.ppc, openldap-clients-2.4.44-25.el7_9 +3
- Red Hat Enterprise Linux Server Optional (v. 7) openldap-servers-sql-2.4.44-25.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) openldap-2.4.44-25.el7_9, openldap-clients-2.4.44-25.el7_9, openldap-devel-2.4.44-25.el7_9 +1
- Red Hat Enterprise Linux Workstation Optional (v. 7) openldap-servers-sql-2.4.44-25.el7_9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Enterprise Application Platform 5 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Enterprise Web Server 2 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2022:0621 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2022:0621 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2022:0621 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2022:0621 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2022:0621 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2022:0621 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2022:0621 |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat JBoss Core Services
Timeline
- 2026-10-02 Threatist record created from CVE-2020-25710
- 2026-10-03 Alias added: GHSA-8wg3-gqcw-9fq9
References
Patch 2
Advisory 3
Other 2
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8
Sources
- CVE-2020-25710 · CVE Program
- CVE-2020-25710 · NVD
- FIRST EPSS
- GHSA-8wg3-gqcw-9fq9 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-25710 · 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