glibc: denial of service in getnetbyname function
Published Feb 24, 2015
7.8
HIGHCVSS 2.0
EPSS 7.83%
Description
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.
Affected products
No data.
Configuration 2
- 10.04
- 12.04
- 14.04
- 14.10
- 13.1
- 13.2
No data.
Red Hat Enterprise Linux 7
glibc-0:2.17-222.el7
Fixed · RHSA-2018:0805
Red Hat Enterprise Linux 5
glibc
Will not fix
Red Hat Enterprise Linux 6
glibc
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | glibc-0:2.17-222.el7 | Fixed | RHSA-2018:0805 |
| Red Hat Enterprise Linux 5 | glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | glibc | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
A non-standard system configuration ("networks: file dns" in /etc/nsswitch.conf) and possibly a DNS spoofing attack is required to exploit this flaw. Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.83% (0.07834) | 94.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.69% (0.07688) | 93.80th | v5 (v2026.06.15) |
| Dec 24, 2025 | 8.70% (0.08700) | 92.19th | v4 (v2025.03.14) |
| Dec 9, 2025 | 12.53% (0.12532) | 93.67th | v4 (v2025.03.14) |
| Dec 5, 2025 | 8.72% (0.08723) | 92.16th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.22% (0.03217) | 85.90th | v4 (v2025.03.14) |
| Mar 29, 2025 | 14.29% (0.14289) | 90.68th | v4 (v2025.03.14) |
| Mar 25, 2025 | 3.22% (0.03217) | 85.83th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.57% (0.04568) | 88.47th | v4 (v2025.03.14) |
| Dec 12, 2024 | 11.14% (0.11137) | 95.42th | v3 (v2023.03.01) |
| Oct 6, 2024 | 11.14% (0.11137) | 95.28th | v3 (v2023.03.01) |
| Aug 20, 2024 | 12.40% (0.12400) | 95.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 10.71% (0.10708) | 94.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Feb 13, 2023 | 3.78% (0.03779) | 85.08th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
References (18)
- http://lists.opensuse.org/opensuse-updates/2015-02/msg00089.html vendor-advisoryx_refsource_SUSE
- http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html x_refsource_MISC
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html x_refsource_MISC
- http://seclists.org/fulldisclosure/2019/Jun/18 mailing-listx_refsource_FULLDISC
- http://seclists.org/fulldisclosure/2019/Sep/7 mailing-listx_refsource_FULLDISC
- http://www.openwall.com/lists/oss-security/2014/12/18/1 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/71670 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2519-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/errata/RHSA-2018:0805 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2014-9402 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1175369 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-9402
- https://seclists.org/bugtraq/2019/Jun/14 mailing-listx_refsource_BUGTRAQ
- https://seclists.org/bugtraq/2019/Sep/7 mailing-listx_refsource_BUGTRAQ
- https://security.gentoo.org/glsa/201602-02 vendor-advisoryx_refsource_GENTOO
- https://sourceware.org/bugzilla/show_bug.cgi?id=17630 x_refsource_CONFIRMExploit
- https://www.cve.org/CVERecord?id=CVE-2014-9402
Change history (0)
No recorded changes yet.