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2.7
LOW CVSS 2.0
CVE-2014-3493
Samba SMBd Denial of Service Memory Corruption Vulnerability
Description

The push_ascii function in smbd in Samba 3.6.x before 3.6.24, 4.0.x before 4.0.19, and 4.1.x before 4.1.9 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) via an attempt to read a Unicode pathname without specifying use of Unicode, leading to a character-set conversion failure that triggers an invalid pointer dereference.

INFO

Published Date :

June 23, 2014, 2:55 p.m.

Last Modified :

April 12, 2025, 10:46 a.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2014-3493 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Samba samba
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 LOW [email protected]
Solution
To address a vulnerability in Samba, update to the latest version.
  • Update the Samba packages.
  • Upgrade to Samba version 3.6.24, 4.0.19, 4.1.9, or later.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2014-3493.

URL Resource
http://advisories.mageia.org/MGASA-2014-0279.html
http://linux.oracle.com/errata/ELSA-2014-0866.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
http://rhn.redhat.com/errata/RHSA-2014-0866.html
http://secunia.com/advisories/59378
http://secunia.com/advisories/59407
http://secunia.com/advisories/59433
http://secunia.com/advisories/59579
http://secunia.com/advisories/59834
http://secunia.com/advisories/59848
http://secunia.com/advisories/59919
http://secunia.com/advisories/61218
http://security.gentoo.org/glsa/glsa-201502-15.xml
http://www.mandriva.com/security/advisories?name=MDVSA-2014:136
http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
http://www.samba.org/samba/security/CVE-2014-3493 Vendor Advisory
http://www.securityfocus.com/archive/1/532757/100/0/threaded
http://www.securityfocus.com/bid/68150
http://www.securitytracker.com/id/1030455
https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1
https://bugzilla.redhat.com/show_bug.cgi?id=1108748
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
http://advisories.mageia.org/MGASA-2014-0279.html
http://linux.oracle.com/errata/ELSA-2014-0866.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
http://rhn.redhat.com/errata/RHSA-2014-0866.html
http://secunia.com/advisories/59378
http://secunia.com/advisories/59407
http://secunia.com/advisories/59433
http://secunia.com/advisories/59579
http://secunia.com/advisories/59834
http://secunia.com/advisories/59848
http://secunia.com/advisories/59919
http://secunia.com/advisories/61218
http://security.gentoo.org/glsa/glsa-201502-15.xml
http://www.mandriva.com/security/advisories?name=MDVSA-2014:136
http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
http://www.samba.org/samba/security/CVE-2014-3493 Vendor Advisory
http://www.securityfocus.com/archive/1/532757/100/0/threaded
http://www.securityfocus.com/bid/68150
http://www.securitytracker.com/id/1030455
https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1
https://bugzilla.redhat.com/show_bug.cgi?id=1108748
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2014-3493 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2014-3493 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2014-3493 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2014-3493 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://advisories.mageia.org/MGASA-2014-0279.html
    Added Reference http://linux.oracle.com/errata/ELSA-2014-0866.html
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
    Added Reference http://rhn.redhat.com/errata/RHSA-2014-0866.html
    Added Reference http://secunia.com/advisories/59378
    Added Reference http://secunia.com/advisories/59407
    Added Reference http://secunia.com/advisories/59433
    Added Reference http://secunia.com/advisories/59579
    Added Reference http://secunia.com/advisories/59834
    Added Reference http://secunia.com/advisories/59848
    Added Reference http://secunia.com/advisories/59919
    Added Reference http://secunia.com/advisories/61218
    Added Reference http://security.gentoo.org/glsa/glsa-201502-15.xml
    Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2014:136
    Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
    Added Reference http://www.samba.org/samba/security/CVE-2014-3493
    Added Reference http://www.securityfocus.com/archive/1/532757/100/0/threaded
    Added Reference http://www.securityfocus.com/bid/68150
    Added Reference http://www.securitytracker.com/id/1030455
    Added Reference https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1108748
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Changed Description It was discovered that smbd, the Samba file server daemon, did not properly handle certain files that were stored on the disk and used a valid Unicode character in the file name. An attacker able to send an authenticated non-Unicode request that attempted to read such a file could cause smbd to crash. The push_ascii function in smbd in Samba 3.6.x before 3.6.24, 4.0.x before 4.0.19, and 4.1.x before 4.1.9 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) via an attempt to read a Unicode pathname without specifying use of Unicode, leading to a character-set conversion failure that triggers an invalid pointer dereference.
    Removed CVSS V2 Red Hat, Inc. (AV:A/AC:L/Au:S/C:N/I:N/A:P)
    Removed Reference https://access.redhat.com/errata/RHSA-2014:0866 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2014:0867 [No Types Assigned]
    Removed Reference https://access.redhat.com/errata/RHSA-2014:1009 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2014-3493 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description The push_ascii function in smbd in Samba 3.6.x before 3.6.24, 4.0.x before 4.0.19, and 4.1.x before 4.1.9 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) via an attempt to read a Unicode pathname without specifying use of Unicode, leading to a character-set conversion failure that triggers an invalid pointer dereference. It was discovered that smbd, the Samba file server daemon, did not properly handle certain files that were stored on the disk and used a valid Unicode character in the file name. An attacker able to send an authenticated non-Unicode request that attempted to read such a file could cause smbd to crash.
    Added CVSS V2 Red Hat, Inc. (AV:A/AC:L/Au:S/C:N/I:N/A:P)
    Added Reference https://access.redhat.com/errata/RHSA-2014:0866 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2014:0867 [No Types Assigned]
    Added Reference https://access.redhat.com/security/cve/CVE-2014-3493 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2014:1009 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 09, 2018

    Action Type Old Value New Value
    Removed Reference http://www.securityfocus.com/archive/1/archive/1/532757/100/0/threaded [No Types Assigned]
    Added Reference http://www.securityfocus.com/archive/1/532757/100/0/threaded [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 07, 2017

    Action Type Old Value New Value
    Added Reference https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1030455 [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/68150 [No Types Assigned]
    Added Reference http://secunia.com/advisories/61218 [No Types Assigned]
    Added Reference http://secunia.com/advisories/59433 [No Types Assigned]
    Added Reference http://secunia.com/advisories/59407 [No Types Assigned]
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html [No Types Assigned]
    Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 23, 2016

    Action Type Old Value New Value
    Removed Reference https://h20565.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
  • CVE Modified by [email protected]

    Aug. 20, 2016

    Action Type Old Value New Value
    Added Reference https://h20565.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
  • CVE Modified by [email protected]

    Jun. 15, 2016

    Action Type Old Value New Value
    Added Reference https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993
  • CVE Modified by [email protected]

    Apr. 02, 2015

    Action Type Old Value New Value
    Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
  • CVE Modified by [email protected]

    Mar. 03, 2015

    Action Type Old Value New Value
    Added Reference http://security.gentoo.org/glsa/glsa-201502-15.xml
  • Initial Analysis by [email protected]

    Jun. 24, 2014

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 2.7
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.25 }} 0.95%

score

0.83814

percentile