CVE-2014-0239
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header...
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
Exploit likelihood
What each source reports
NVD Score used
5.0
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Record
CVE-2014-0239- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Record
CVE-2014-0239- Updated
- 2026-11-02
EUVDEUVD-2014-0277 No score
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Record
EUVD-2014-0277- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4rm5-v8f4-mx8v No score
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header...
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Record
GHSA-4rm5-v8f4-mx8v- Weakness
- CWE-20
- Updated
- 2026-11-02
OSV No score
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Record
CVE-2014-0239- Updated
- 2026-11-02
OSVDEBIAN-CVE-2014-0239 No score
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Record
DEBIAN-CVE-2014-0239- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10069-1 No score
ctdb-4.5.0-1.1 on GA media
These are all security issues fixed in the ctdb-4.5.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10069-1- Updated
- 2026-11-02
OSVUBUNTU-CVE-2014-0239 No score
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Record
UBUNTU-CVE-2014-0239- Updated
- 2026-11-02
OSVUSN-2257-1 No score
samba vulnerabilities
Christof Schmitt discovered that Samba incorrectly initialized a certain response field when vfs shadow copy was enabled. A remote authenticated attacker could use this issue to possibly obtain sensitive information. This issue only affected Ubuntu 13.10 and Ubuntu 14.04 LTS. (CVE-2014-0178)
It was discovered that the Samba internal DNS server incorrectly handled QR fields when processing incoming DNS messages. A remote attacker could use this issue to cause Samba to consume resources, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-0239)
Daniel Berteaud discovered that the Samba NetBIOS name service daemon incorrectly handled certain malformed packets. A remote attacker could use this issue to cause Samba to consume resources, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS, Ubuntu 13.10, and Ubuntu 14.04 LTS. (CVE-2014-0244)
Simon Arlott discovered that Samba incorrectly handled certain unicode path names. A remote authenticated attacker could use this issue to cause Samba to stop responding, resulting in a denial of service. (CVE-2014-3493)
- Record
USN-2257-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
sambaDebian:12 |
before 2:4.1.8+dfsg-1 | 2:4.1.8+dfsg-1 |
sambaDebian:13 |
before 2:4.1.8+dfsg-1 | 2:4.1.8+dfsg-1 |
sambaDebian:14 |
before 2:4.1.8+dfsg-1 | 2:4.1.8+dfsg-1 |
sambaUbuntu:14.04:LTS |
before 2:4.1.6+dfsg-1ubuntu2.14.04.2, plus listed versions 2:3.6.18-1ubuntu32:4.0.10+dfsg-4ubuntu22:4.0.13+dfsg-1ubuntu12:4.1.3+dfsg-2ubuntu22:4.1.3+dfsg-2ubuntu3 Show 5 moreShow less2:4.1.3+dfsg-2ubuntu42:4.1.3+dfsg-2ubuntu52:4.1.6+dfsg-1ubuntu12:4.1.6+dfsg-1ubuntu22:4.1.6+dfsg-1ubuntu2.14.04.1 |
2:4.1.6+dfsg-1ubuntu2.14.04.2 |
sambaUbuntu:14.04:LTS From an advisory covering 4 CVEs |
before 2:4.1.6+dfsg-1ubuntu2.14.04.2, plus listed versions 2:3.6.18-1ubuntu32:4.0.10+dfsg-4ubuntu22:4.0.13+dfsg-1ubuntu12:4.1.3+dfsg-2ubuntu22:4.1.3+dfsg-2ubuntu3 Show 5 moreShow less2:4.1.3+dfsg-2ubuntu42:4.1.3+dfsg-2ubuntu52:4.1.6+dfsg-1ubuntu12:4.1.6+dfsg-1ubuntu22:4.1.6+dfsg-1ubuntu2.14.04.1 |
2:4.1.6+dfsg-1ubuntu2.14.04.2 |
sambaopenSUSE:Tumbleweed From an advisory covering 56 CVEs |
before 4.5.0-1.1 | 4.5.0-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2014-0239 is a medium vulnerability (CVSS 5.0) in Samba, published May 28, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 66.8%, the 99th percentile. Fixed in samba 2:4.1.8+dfsg-1.
References
samba.org/samba/security/CVE-2014-0239
security.gentoo.org/glsa/glsa-201502-15.xml
securityfocus.com/bid/67691
secunia.com/advisories/59579
securitytracker.com/id/1030309
nvd.nist.gov/vuln/detail/CVE-2014-0239
Show 64 moreShow less
github.com/advisories/GHSA-4rm5-v8f4-mx8v
security-tracker.debian.org/tracker/CVE-2014-0239
ubuntu.com/security/CVE-2014-0239
ubuntu.com/security/notices/USN-2257-1
cve.org/CVERecord?id=CVE-2014-0239
ubuntu.com/security/CVE-2014-0178
ubuntu.com/security/CVE-2014-0244
ubuntu.com/security/CVE-2014-3493
suse.com/security/cve/CVE-2009-1886
suse.com/security/cve/CVE-2009-1888
suse.com/security/cve/CVE-2009-2813
suse.com/security/cve/CVE-2009-2906
suse.com/security/cve/CVE-2009-2948
suse.com/security/cve/CVE-2010-0547
suse.com/security/cve/CVE-2010-0728
suse.com/security/cve/CVE-2010-0787
suse.com/security/cve/CVE-2010-0926
suse.com/security/cve/CVE-2010-1635
suse.com/security/cve/CVE-2010-1642
suse.com/security/cve/CVE-2010-2063
suse.com/security/cve/CVE-2010-3069
suse.com/security/cve/CVE-2011-0719
suse.com/security/cve/CVE-2011-2522
suse.com/security/cve/CVE-2011-2694
suse.com/security/cve/CVE-2012-0817
suse.com/security/cve/CVE-2012-0870
suse.com/security/cve/CVE-2012-1182
suse.com/security/cve/CVE-2012-2111
suse.com/security/cve/CVE-2012-6150
suse.com/security/cve/CVE-2013-0172
suse.com/security/cve/CVE-2013-0213
suse.com/security/cve/CVE-2013-0214
suse.com/security/cve/CVE-2013-0454
suse.com/security/cve/CVE-2013-1863
suse.com/security/cve/CVE-2013-4124
suse.com/security/cve/CVE-2013-4408
suse.com/security/cve/CVE-2013-4475
suse.com/security/cve/CVE-2013-4476
suse.com/security/cve/CVE-2013-4496
suse.com/security/cve/CVE-2013-6442
suse.com/security/cve/CVE-2014-0178
suse.com/security/cve/CVE-2014-0239
suse.com/security/cve/CVE-2014-0244
suse.com/security/cve/CVE-2014-3493
suse.com/security/cve/CVE-2014-3560
suse.com/security/cve/CVE-2014-8143
suse.com/security/cve/CVE-2015-0240
suse.com/security/cve/CVE-2015-3223
suse.com/security/cve/CVE-2015-5252
suse.com/security/cve/CVE-2015-5296
suse.com/security/cve/CVE-2015-5299
suse.com/security/cve/CVE-2015-5330
suse.com/security/cve/CVE-2015-5370
suse.com/security/cve/CVE-2015-7560
suse.com/security/cve/CVE-2015-8467
suse.com/security/cve/CVE-2015-8543
suse.com/security/cve/CVE-2016-0771
suse.com/security/cve/CVE-2016-2110
suse.com/security/cve/CVE-2016-2111
suse.com/security/cve/CVE-2016-2112
suse.com/security/cve/CVE-2016-2113
suse.com/security/cve/CVE-2016-2115
suse.com/security/cve/CVE-2016-2118
suse.com/security/cve/CVE-2016-2119