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Vulnerability Alert

Samba DCE-RPC Packet Processing Buffer Overflow Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:32103
Version:5
First Published:2013 December 10 19:48 GMT
Last Published:2014 August 11 15:41 GMT
Port: Not available
CVE:CVE-2013-4408
BugTraq ID:64191
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.9
 
Version Summary:HP has released an additional security bulletin and software updates to address the Samba DCE-RPC packet processing buffer overflow vulnerability.
 
 
Description
A vulnerability in the DCE-RPC client code in Samba could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition.

The vulnerability is due to improper processing of crafted DCE-RPC packets by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by submitting crafted DCE-RPC packets to be processed by the targeted device. Processing the packets could cause a heap-based overflow condition that the attacker could use to execute arbitrary code with root privileges or cause a DoS condition. A successful exploit could result in a complete system compromise.

Samba has confirmed the vulnerability and released software updates.
 
Warning Indicators
Samba versions 4.1.3 and prior are vulnerable.
 
IntelliShield Analysis
To exploit this vulnerability, an attacker would need access to trusted, internal networks in the Active Directory domain in which the targeted device is located. This access requirement decreases the likelihood of a successful exploit.

An attacker may attempt to perform a man-in-the-middle (MiTM) attack to impersonate the targeted device in an attempt to exploit this vulnerability.
 
Vendor Announcements
Samba has issued release notes at the following link: CVE-2013-4408

FreeBSD has released a VuXML document at the following link: samba -- multiple vulnerabilities

HP has released security bulletins c04226299 and c04396638 at the following links: HPSBNS02991 and HPSBUX03087

Oracle has released a security notification at the following link: CVE-2013-4408

Red Hat has released an official CVE statement and security advisories for bug 1018032 at the following links: CVE-2013-4408, RHSA-2013:1805, RHSA-2013:1806, and RHSA-2014:0009
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code with root-level access, which could result in a complete compromise of the targeted system. An attacker could also cause the device to crash, resulting in a DoS condition.
 
Technical Information
The vulnerability is due to improper checking of the DCE-RPC fragment length in the DCE-RPC client code used by the affected software.

An unauthenticated, remote attacker could exploit this vulnerability by sending crafted DCE-RPC packets to be processed by the targeted device. Processing the packets could cause a heap-based overflow condition that the attacker could use to compromise the winbindd daemon to execute arbitrary code with root privileges or cause a DoS condition. A successful exploit could result in a complete system compromise.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.

Administrators are advised to allow only trusted users to have network access.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.
 
Patches/Software
Samba has released software updates and patches at the following links: CentOS packages can be updated using the up2date or yum command.

FreeBSD has released ports collection updates at the following link: Ports Collection Index

HP has released updated software at the following links:

HP-UX CIFS-Server (Samba)
HP-UX B.11.31A.03.01.06
HP-UX B.11.23A.03.02.03
HP-UX B.11.11A.02.04.06

Oracle has released patches for registered users at the following links: Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.
 
Alert History
 

Version 4, April 9, 2014, 8:24 AM: HP has released a security bulletin and software updates to address the Samba DCE-RPC packet processing buffer overflow vulnerability.

Version 3, February 20, 2014, 10:55 AM: Oracle has released a security notification and patches to address the Samba DCE-RPC packet processing buffer overflow vulnerability.

Version 2, January 7, 2014, 3:05 PM: Red Hat has released a security advisory and updated software to address the Samba DCE-RPC packet processing buffer overflow vulnerability.

Version 1, December 10, 2013, 2:48 PM: Samba contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service condition. Updates are available.



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
GNU Public LicenseSamba 3.4 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17 | 3.5 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .20, .21, .22 | 3.6 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14, .15, .16, .17, .18, .19, .20, .21 | 4.0 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12 | 4.1 .0, .2

Associated Products:
CentOS ProjectCentOS 5 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64, .4 i386, .4 x86_64, .5 i386, .5 x86_64 | 6 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64
FreeBSD ProjectFreeBSD 6.3 Base | 6.4 Base | 7.0 Base | 7.1 Base | 7.2 Base | 7.3 Base | 7.4 Base | 8.0 Base | 8.1 Base | 8.2 Base | 8.3 Base | 9.0 Base | 9.1 Base | 9.2 Base
HPCIFS Server Suite A.02.03 Base | A.02.03.01 Base | A.02.03.02 Base | A.02.03.03 Base | A.02.03.04 Base | A.02.03.05 Base | A.02.03.06 Base | A.03.01.01 Base | A.03.01.02 Base | A.03.01.03 Base | A.03.01.04 Base | A.03.01.05 Base | A.03.02 Base
HPHP NonStop H06 .15, .15.01, .15.02, .16, .16.01, .16.02, .17, .17.01, .17.02, .17.03, .18.01, .18.02, .19, .19.01, .19.02, .19.03, .20, .20.01, .20.02, .20.03, .23.00, .21.00, .21.01, .21.02, .22.00, .22.01, .24.00, .26, .26.01, .27, .28 | J06 .04, .04.01, .04.02, .05, .05.01, .05.02, .06, .06.01, .06.02, .06.03, .07.01, .07.02, .08, .08.01, .08.02, .08.03, 08.04, .09, .09.01, .09.02, .09.03, 09.04, .10.00, .10.01, .10.02, .11.00, .11.01, .12.00, .13.00, .15, .15.01, .16, .17
Oracle CorporationSolaris 11.1 Base
Red Hat, Inc.Red Hat Enterprise Linux 5 IA-32, IA-64, PPC, ppc64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 5 IA-32, x86_64 | 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop Workstation 5 IA-32, x86-64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server 6 IA-32, PPC 64, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server EUS 6.5.z IA-32, PPC, PPC64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Resilient Storage EUS 6.5.z x86_64
Red Hat, Inc.Red Hat Enterprise Linux Workstation 6 IA-32, x86_64
Red Hat, Inc.Red Hat Storage Server 2.1 x86_64
Sun Microsystems, Inc.Solaris 10 sparc, x64/x86




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