Samba up to 4.1.8 smbd Service push_ascii Unicode Path Name memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Samba up to 4.1.8 and classified as problematic. This vulnerability affects the function push_ascii of the component smbd Service. The manipulation as part of Unicode Path Name results in memory corruption. This vulnerability is known as CVE-2014-3493. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Samba up to 4.1.8 (File Transfer Software). It has been classified as problematic. Affected is the function push_ascii of the component smbd Service. The manipulation as part of a Unicode Path Name leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 06/23/2014 by Simon Arlott as Denial of service - Server crash/memory corruption as confirmed advisory (Website). The advisory is available at samba.org. This vulnerability is traded as CVE-2014-3493 since 05/14/2014. It is possible to launch the attack remotely. A authentication is needed for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 76431 (CentOS 5 / 6 : samba / samba3x (CESA-2014:0866)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185124 (HPE HP-UX CIFS-Server Multiple Vulnerabilities (HPSBUX03574)).

Upgrading to version 3.6.24, 4.0.19 or 4.1.9 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (93928), Tenable (76431), SecurityFocus (BID 68150†), Secunia (SA59378†) and SecurityTracker (ID 1030455†). Similar entries are available at VDB-7563, VDB-11176, VDB-12681 and VDB-13388. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 76431
Nessus Name: CentOS 5 / 6 : samba / samba3x (CESA-2014:0866)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 702966
OpenVAS Name: Debian Security Advisory DSA 2966-1 (samba - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 3.6.24/4.0.19/4.1.9

Timelineinfo

05/14/2014 🔍
06/23/2014 +40 days 🔍
06/23/2014 +0 days 🔍
06/23/2014 +0 days 🔍
06/23/2014 +0 days 🔍
06/23/2014 +0 days 🔍
06/24/2014 +1 days 🔍
07/02/2014 +8 days 🔍
03/17/2015 +258 days 🔍
08/01/2021 +2329 days 🔍

Sourcesinfo

Product: samba.org

Advisory: Denial of service - Server crash/memory corruption
Researcher: Simon Arlott
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3493 (🔍)
GCVE (CVE): GCVE-0-2014-3493
GCVE (VulDB): GCVE-100-43530

OVAL: 🔍

X-Force: 93928 - Samba push_ascii() denial of service, Medium Risk
SecurityFocus: 68150 - Samba CVE-2014-3493 Memory Corruption Vulnerability
Secunia: 59378 - SUSE update for samba, Less Critical
SecurityTracker: 1030455 - Samba smbd and nmbd Processing Flaws Let Remote Users Deny Service
Vulnerability Center: 45104 - Samba 3.6.0 Through 4.1.8 Remote DoS via Reading a Unicode Pathname, Low

See also: 🔍

Entryinfo

Created: 03/17/2015 12:19
Updated: 08/01/2021 16:23
Changes: 03/17/2015 12:19 (75), 05/31/2017 09:03 (14), 08/01/2021 16:15 (3), 08/01/2021 16:23 (1)
Complete: 🔍
Cache ID: 216:59B:103

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