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Samba CVE-2013-4124

MEDIUM
Numeric Errors (CWE-189)
2013-08-06 secalert@redhat.com
Denial Of Service Red Hat Canonical Enterprise Linux Fedora Samba Ubuntu Linux Opensuse Fedoraproject
5.0
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-189
ASVS 5.0
V15 - Secure Coding and Architecture Numeric handling
Impact

CVSS score of 5.0 (MEDIUM). Attack characteristics: network attack vector, low complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 83.53%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 83.5% exploitation probability (EPSS)

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AnalysisAI

Integer overflow in the read_nttrans_ea_list function in nttrans.c in smbd in Samba 3.x before 3.5.22, 3.6.x before 3.6.17, and 4.x before 4.0.8 allows remote attackers to cause a denial of service. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 83.5%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-189. Integer overflow in the read_nttrans_ea_list function in nttrans.c in smbd in Samba 3.x before 3.5.22, 3.6.x before 3.6.17, and 4.x before 4.0.8 allows remote attackers to cause a denial of service (memory consumption) via a malformed packet. Affected products include: Canonical Ubuntu Linux, Redhat Enterprise Linux, Fedoraproject Fedora, Samba, Opensuse. Version information: before 3.5.22.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
None
Integrity
None
Availability
P

DescriptionCVE.org

Integer overflow in the read_nttrans_ea_list function in nttrans.c in smbd in Samba 3.x before 3.5.22, 3.6.x before 3.6.17, and 4.x before 4.0.8 allows remote attackers to cause a denial of service (memory consumption) via a malformed packet.

Threat Intelligence Overview

Threat Score
5.0/10
Composite threat intelligence
EPSS Score
83.5%
Top 1% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS POC (1) Exploit-DB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 83.5%
Patch available Yes
Active threat Yes
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

129
Low Medium High Critical
KEV: 0
EPSS: +84
CVSS: +25
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.2:a:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.2a:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.4:rc1:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.8:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.0.9:*:*:*:*:*:*:*
+ 157 more

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References

Advisories & patches
PATCH http://ftp.samba.org/pub/samba/patches/security/samba-4.0.7-CVE-2013-4124.patch ADVISORY http://lists.fedoraproject.org/pipermail/package-announce/2013-August/113591.html ADVISORY http://lists.fedoraproject.org/pipermail/package-announce/2013-August/114011.html ADVISORY http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00012.html ADVISORY http://lists.opensuse.org/opensuse-security-announce/2013-08/msg00015.html ADVISORY http://rhn.redhat.com/errata/RHSA-2013-1310.html ADVISORY http://secunia.com/advisories/54519 ADVISORY http://www.samba.org/samba/history/samba-3.5.22.html ADVISORY http://www.samba.org/samba/history/samba-3.6.17.html ADVISORY http://www.samba.org/samba/history/samba-4.0.8.html ADVISORY http://www.samba.org/samba/security/CVE-2013-4124 ADVISORY http://www.ubuntu.com/usn/USN-1966-1 REF http://archives.neohapsis.com/archives/bugtraq/2013-08/0028.html REF http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html REF http://marc.info/?l=bugtraq&m=141660010015249&w=2 REF http://osvdb.org/95969 REF http://rhn.redhat.com/errata/RHSA-2013-1542.html REF http://rhn.redhat.com/errata/RHSA-2013-1543.html REF http://rhn.redhat.com/errata/RHSA-2014-0305.html REF http://security.gentoo.org/glsa/glsa-201502-15.xml REF http://www.mandriva.com/security/advisories?name=MDVSA-2013:207 REF http://www.securitytracker.com/id/1028882 REF https://bugzilla.redhat.com/show_bug.cgi?id=984401 REF https://exchange.xforce.ibmcloud.com/vulnerabilities/86185

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