The dns_to_ldap_dn_escape function in src/ldap_convert.c in bind-dyndb-ldap 1.1.0rc1 and…
Priority LOW 28CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The dns_to_ldap_dn_escape function in src/ldap_convert.c in bind-dyndb-ldap 1.1.0rc1 and earlier does not properly escape distinguished names (DN) for LDAP queries, which allows remote DNS servers to cause a denial of service (named service hang) via a "$" character in a DN in a DNS query.
Why it matters now
EPSS 0.03072 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory
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 · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:*:rc1:*:*:*:*:*:* | up to 1.1.0 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:a1:*:*:*:*:*:* | 0.1.0 a1 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:b:*:*:*:*:*:* | 0.1.0 b | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.2.0:*:*:*:*:*:*:* | 0.2.0 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.0.0:b1:*:*:*:*:*:* | 1.0.0 b1 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.0.0:rc1:*:*:*:*:*:* | 1.0.0 rc1 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:a1:*:*:*:*:*:* | 1.1.0 a1 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:a2:*:*:*:*:*:* | 1.1.0 a2 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:b1:*:*:*:*:*:* | 1.1.0 b1 | Vulnerable | Martin Nagy |
| cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:b2:*:*:*:*:*:* | 1.1.0 b2 | Vulnerable | Martin Nagy |
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:*:rc1:*:*:*:*:*:* Versions up to 1.1.0 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:a1:*:*:*:*:*:* Versions 0.1.0 a1 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.1.0:b:*:*:*:*:*:* Versions 0.1.0 b Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:0.2.0:*:*:*:*:*:*:* Versions 0.2.0 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.0.0:b1:*:*:*:*:*:* Versions 1.0.0 b1 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.0.0:rc1:*:*:*:*:*:* Versions 1.0.0 rc1 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:a1:*:*:*:*:*:* Versions 1.1.0 a1 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:a2:*:*:*:*:*:* Versions 1.1.0 a2 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:b1:*:*:*:*:*:* Versions 1.1.0 b1 Vulnerable ·Martin Nagy
- cpe:2.3:a:martin_nagy:bind-dyndb-ldap:1.1.0:b2:*:*:*:*:*:* Versions 1.1.0 b2 Vulnerable ·Martin Nagy
Remediation
Red Hat 1 advisory
- RHSA-2012:1139 Released 2012-08-03 · Red Hat rating Importantbind-dyndb-ldap security update
- Red Hat Enterprise Linux Server (v. 6) bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1
- Red Hat Enterprise Linux Workstation (v. 6) bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2012:1139 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2012:1139 |
Timeline
- 2026-10-02 Threatist record created from CVE-2012-3429
- 2026-10-03 Alias added: GHSA-m6m8-g76c-567c
References
More Martin Nagy Bind-dyndb-ldap vulnerabilities
- TI-2012-01907 The handle_connection_error function in ldap_helper.c in bind-dyndb-ldap before 1.1.0rc1… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2012-3429 · CVE Program
- CVE-2012-3429 · NVD
- FIRST EPSS
- GHSA-m6m8-g76c-567c · GitHub Advisory Database · CC BY 4.0
- CVE-2012-3429 · 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