samba: potential DoS in the internal DNS server
Published May 28, 2014
5.0
MEDIUMCVSS 2.0
EPSS 66.81%
Description
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.
Affected products
No data.
No data.
Red Hat Enterprise Linux 4
samba
Not affected
Red Hat Enterprise Linux 5
samba
Not affected
Red Hat Enterprise Linux 5
samba3x
Not affected
Red Hat Enterprise Linux 6
samba
Not affected
Red Hat Enterprise Linux 6
samba4
Not affected
Red Hat Enterprise Linux 7
samba
Not affected
Red Hat Storage 2
samba
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 5 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 5 | samba3x | Not affected | n/a |
| Red Hat Enterprise Linux 6 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 6 | samba4 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | samba | Not affected | n/a |
| Red Hat Storage 2 | samba | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the version of samba as shipped with Red Hat Enterprise Linux 5 and 6. This issue does not affect the version of samba3x as shipped with Red Hat Enterprise Linux 5. This issue does not affect the version of samba4 as shipped with Red Hat Enterprise Linux 6.
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:P
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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 66.81% (0.66811) | 99.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 67.57% (0.67570) | 99.22th | v5 (v2026.06.15) |
| Jan 24, 2026 | 22.16% (0.22157) | 95.63th | v4 (v2025.03.14) |
| Oct 31, 2025 | 5.34% (0.05345) | 89.61th | v4 (v2025.03.14) |
| Aug 30, 2025 | 8.57% (0.08573) | 92.06th | v4 (v2025.03.14) |
| Jul 29, 2025 | 25.44% (0.25444) | 95.97th | v4 (v2025.03.14) |
| Jun 5, 2025 | 22.16% (0.22157) | 95.46th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.08% (0.10075) | 92.35th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.57% (0.08568) | 87.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.08% (0.10075) | 92.51th | v4 (v2025.03.14) |
| Dec 17, 2024 | 10.58% (0.10576) | 95.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 37.38% (0.37384) | 96.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (9)
- http://secunia.com/advisories/59579 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://security.gentoo.org/glsa/glsa-201502-15.xml vendor-advisoryx_refsource_GENTOOThird Party Advisory
- http://www.samba.org/samba/security/CVE-2014-0239 x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/67691 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1030309 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2014-0239 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1101988 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-0239
- https://www.cve.org/CVERecord?id=CVE-2014-0239
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/59579 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://security.gentoo.org/glsa/glsa-201502-15.xml | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| http://www.samba.org/samba/security/CVE-2014-0239 | x_refsource_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/bid/67691 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1030309 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2014-0239 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1101988 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-0239 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-0239 |
Change history (0)
No recorded changes yet.