The nss_dns implementation of getnetbyname in GNU C Library (aka glibc) before 2.21, when…
Priority MEDIUM 45CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Partial Red Hat: 10 fixed, 2 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.
Summary
The nss_dns implementation of getnetbyname in GNU C Library (aka glibc) before 2.21, when the DNS backend in the Name Service Switch configuration is enabled, allows remote attackers to cause a denial of service (infinite loop) by sending a positive answer while a network name is being process.
Why it matters now
EPSS 0.07834 94th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 10 fixed, 2 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | up to 2.20 | Vulnerable | GNU |
| cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:* | 10.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:* | 12.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:* | 14.10 | Vulnerable | Canonical |
| cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* | 13.1 | Vulnerable | openSUSE |
| cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* | 13.2 | Vulnerable | openSUSE |
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* Versions up to 2.20 Vulnerable ·GNU
- cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:* Versions 10.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:* Versions 12.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:* Versions 14.10 Vulnerable ·Canonical
- cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* Versions 13.1 Vulnerable ·openSUSE
- cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* Versions 13.2 Vulnerable ·openSUSE
Remediation
Red Hat 1 advisory
- RHSA-2018:0805 Released 2018-04-10 · Red Hat rating Moderateglibc security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) glibc-2.17-222.el7, glibc-common-2.17-222.el7, glibc-devel-2.17-222.el7 +3
- Red Hat Enterprise Linux Client Optional (v. 7) glibc-static-2.17-222.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) glibc-2.17-222.el7, glibc-common-2.17-222.el7, glibc-devel-2.17-222.el7 +3
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) glibc-static-2.17-222.el7
- Red Hat Enterprise Linux Server (v. 7) glibc-2.17-222.el7, glibc-2.17-222.el7.ppc, glibc-common-2.17-222.el7 +5
- Red Hat Enterprise Linux Server Optional (v. 7) glibc-static-2.17-222.el7, glibc-static-2.17-222.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) glibc-2.17-222.el7, glibc-common-2.17-222.el7, glibc-devel-2.17-222.el7 +3
- Red Hat Enterprise Linux Workstation Optional (v. 7) glibc-static-2.17-222.el7
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) glibc-2.17-222.el7, glibc-common-2.17-222.el7, glibc-devel-2.17-222.el7 +3
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) glibc-static-2.17-222.el7
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2018:0805 |
Timeline
- 2026-10-02 Threatist record created from CVE-2014-9402
- 2026-10-03 Alias added: GHSA-9rf5-3j57-32x7
References
Other 8
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- [oss-security] 20141217 Re: CVE request: glibc
- 20190612 SEC Consult SA-20190612-0 :: Multiple vulnerabilities in WAGO 852 Industrial Managed Switch Series
- 20190613 SEC Consult SA-20190612-0 :: Multiple vulnerabilities in WAGO 852 Industrial Managed Switch Series
- http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
- 20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X
- 20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
Sources
- CVE-2014-9402 · CVE Program
- CVE-2014-9402 · NVD
- FIRST EPSS
- GHSA-9rf5-3j57-32x7 · GitHub Advisory Database · CC BY 4.0
- CVE-2014-9402 · 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