Vulnerability Alert

BIND RDATA Query Processing Denial of Service Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:30237
Version:4
First Published:2013 July 29 16:35 GMT
Last Published:2013 September 11 14:50 GMT
Port: Not available
CVE:CVE-2013-4854
BugTraq ID:61479
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:5.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.7
 
Version Summary:HP has released a security bulletin and updated software to address the BIND RDATA query processing denial of service vulnerability.
 
 
Description
A vulnerability in the ISC BIND could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability is due to improper handling of certain queries by the affected software. An attacker could exploit this vulnerability by transmitting crafted queries to the affected system. An exploit could allow the attacker to cause a DoS condition on the system, denying service to legitimate users.

ISC has confirmed this vulnerability and released updated software.
 
Warning Indicators
The following ISC products are vulnerable:
  • BIND versions 9.7.0 through 9.7.7
  • BIND versions 9.8.0 through 9.8.6b1
  • BIND versions 9.9.0 through 9.9.4-S1b1
 
IntelliShield Analysis
Depending on the network configuration, the attacker may need an access to trusted, internal networks to send the crafted queries to the affected server. This access requirement could limit the likelihood of a successful exploit.

ISC has indicated that both recursive and authoritative-only nameservers are affected.

ISC has confirmed all versions of BIND 9.7 are affected; however, these branches are beyond their end of life and do not receive testing or security fixes from the vendor.
 
Vendor Announcements
ISC has released a security advisory at the following link: CVE-2013-4854

FreeBSD has released a security advisory at the following FTP link: FreeBSD-SA-13:07.bind

FreeBSD has released a VuXML document at the following link: bind -- denial of service vulnerability

HP has released security bulletin c03922396 at the following link: HPSBUX02926 SSRT101281

Red Hat has released an official CVE statement and security advisories for bug 988999 at the following links: CVE-2013-4854, RHSA-2013:1114, and RHSA-2013:1115
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to trigger an assertion failure. An exploit could result in a DoS condition, preventing the daemon from servicing future requests until the daemon can be restarted.
 
Technical Information
The vulnerability is due to an error while handling certain queries by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by sending a query containing crafted RDATA to an affected nameserver. Processing the query could cause the named service to terminate unexpectedly. If the exploit is successful, the attacker may be able to trigger an assertion failure that causes the service to terminate, resulting in a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

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
ISC BIND has released updates at the following links:

BIND 9.8.5-P2
BIND 9.9.3-P2
BIND 9.9.3-S1-P1 (Subscription version customers can obtain software update by contacting the vendor support channel)

CentOS packages can be updated using the up2date or yum command.

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

HP has released software updates at the following FTP link: HPUX-NameServer_C.9.7.3.3.0_HP-UX_B.11.31_IA_PA.depot. The login username and password is located in the Resolution section of the vendor advisory.

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 3, July 30, 2013, 2:47 PM: Red Hat has released security advisories and updated packages to address BIND RDATA query processing denial of service vulnerability.

Version 2, July 30, 2013, 1:21 PM: CentOS has released updated packages to address BIND RDATA query processing denial of service vulnerability.

Version 1, July 29, 2013, 4:35 PM: ISC BIND contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition on a targeted system. Updates are available.


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

Primary Products:
Internet Systems Consortium (ISC)BIND 9.7 .0, .1, .1-P1, .2, .2-P1, .2-P2, .2-P3, .3, .3-P1, .3-P2 | 9.7.3 Base, P3, b1 | 9.7.4 Base, P1, b1 | 9.7.5 Base, b1 | 9.7.6 Base, P1, P2 | 9.7.7 Base | 9.8.0 Base, -P1, -P2, -P3 | 9.8.1 -P1 | 9.8.2 Base, b1 | 9.8.3 Base, P1, P2, P3 | 9.8.4 Base, -p1 | 9.8.5 p1 | 9.8.6 b1 | 9.9.0 Base, a1, a2, a3, b1, b2 | 9.9.1 -P1, Base, -P2, -P3 | 9.9.2 Base, -p1 | 9.9.3 p1, s1 | 9.9.4 b1, S1b1

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
HPHP-UX 11.31 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 Server AUS 6.4 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 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 EUS (Extended Update Support) 5.9.z IA-32, IA-64, PPC, PPC-64, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Long Life 5.9 IA-32, IA-64, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server 6 IA-32, PPC, PPC 64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server EUS 6.4z IA-32, x86_64, PPC, PPC64, s390, s390x
Red Hat, Inc.Red Hat Enterprise Linux Workstation 6 IA-32, x86_64




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