RHSA-2008:0529

Executive Summary

Summary
Title	net-snmp security update

Informations
Name	RHSA-2008:0529	First vendor Publication	2008-06-10
Vendor	RedHat	Last vendor Modification	2008-06-10
Severity (Vendor)	Moderate	Revision	01

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score	10	Attack Range	Network
Cvss Impact Score	10	Attack Complexity	Low
Cvss Expoit Score	10	Authentification	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated net-snmp packages that fix a security issue are now available for
Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

The Simple Network Management Protocol (SNMP) is a protocol used for
network management.

A flaw was found in the way Net-SNMP checked an SNMPv3 packet's Keyed-Hash
Message Authentication Code (HMAC). An attacker could use this flaw to
spoof an authenticated SNMPv3 packet. (CVE-2008-0960)

A buffer overflow was found in the Perl bindings for Net-SNMP. This could
be exploited if an attacker could convince an application using the
Net-SNMP Perl module to connect to a malicious SNMP agent. (CVE-2008-2292)

All users of net-snmp should upgrade to these updated packages, which
contain backported patches to resolve these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

5. Bugs fixed (http://bugzilla.redhat.com/):

447262 - CVE-2008-2292 net-snmp: buffer overflow in perl module's Perl Module __snprint_value()
447974 - CVE-2008-0960 net-snmp SNMPv3 authentication bypass (VU#877044)

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2008-0529.html

CWE : Common Weakness Enumeration

id	Name
CWE-287	Improper Authentication
CWE-119	Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:6414

Oval ID:	oval:org.mitre.oval:def:6414
Title:	Net-snmp SNMPv3 Authentication Bug Lets Remote Users Bypass Authentication
Description:	SNMPv3 HMAC verification in (1) Net-SNMP 5.2.x before 5.2.4.1, 5.3.x before 5.3.2.1, and 5.4.x before 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) Juniper Session and Resource Control (SRC) C-series 1.0.0 through 2.0.0; (5) NetApp (aka Network Appliance) Data ONTAP 7.3RC1 and 7.3RC2; (6) SNMP Research before 16.2; (7) multiple Cisco IOS, CatOS, ACE, and Nexus products; (8) Ingate Firewall 3.1.0 and later and SIParator 3.1.0 and later; (9) HP OpenView SNMP Emanate Master Agent 15.x; and possibly other products relies on the client to specify the HMAC length, which makes it easier for remote attackers to bypass SNMP authentication via a length value of 1, which only checks the first byte.
Family:	unix	Class:	vulnerability
Reference(s):	CVE-2008-0960	Version:	3
Platform(s):	VMWare ESX Server 3 VMWare ESX Server 3.5	Product(s):
Definition Synopsis:
IF VMWare ESX Server 3.0.3 is installed AND Patch ESX303-200810503-SG is not installed OR VMWare ESX Server 3.0.2 is installed AND Patch ESX-1006968 is not installed OR VMware ESX Server 3.5.0 is installed AND Patch ESX350-200811405-SG is not installed

Definition Id: oval:org.mitre.oval:def:5785

Oval ID:	oval:org.mitre.oval:def:5785
Title:	Multiple Vendors Net-SNMPv3 Hash Message Authentication Code Design Error Vulnerability
Description:	SNMPv3 HMAC verification in (1) Net-SNMP 5.2.x before 5.2.4.1, 5.3.x before 5.3.2.1, and 5.4.x before 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) Juniper Session and Resource Control (SRC) C-series 1.0.0 through 2.0.0; (5) NetApp (aka Network Appliance) Data ONTAP 7.3RC1 and 7.3RC2; (6) SNMP Research before 16.2; (7) multiple Cisco IOS, CatOS, ACE, and Nexus products; (8) Ingate Firewall 3.1.0 and later and SIParator 3.1.0 and later; (9) HP OpenView SNMP Emanate Master Agent 15.x; and possibly other products relies on the client to specify the HMAC length, which makes it easier for remote attackers to bypass SNMP authentication via a length value of 1, which only checks the first byte.
Family:	ios	Class:	vulnerability
Reference(s):	CVE-2008-0960	Version:	3
Platform(s):	Cisco IOS	Product(s):
Definition Synopsis:
IOS vulnerable versions AND NOT IOS vulnerable versions AND SNMP v3 Test

Definition Id: oval:org.mitre.oval:def:10820

Oval ID:	oval:org.mitre.oval:def:10820
Title:	SNMPv3 HMAC verification in (1) Net-SNMP 5.2.x before 5.2.4.1, 5.3.x before 5.3.2.1, and 5.4.x before 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) Juniper Session and Resource Control (SRC) C-series 1.0.0 through 2.0.0; (5) NetApp (aka Network Appliance) Data ONTAP 7.3RC1 and 7.3RC2; (6) SNMP Research before 16.2; (7) multiple Cisco IOS, CatOS, ACE, and Nexus products; (8) Ingate Firewall 3.1.0 and later and SIParator 3.1.0 and later; (9) HP OpenView SNMP Emanate Master Agent 15.x; and possibly other products relies on the client to specify the HMAC length, which makes it easier for remote attackers to bypass SNMP authentication via a length value of 1, which only checks the first byte.
Description:	SNMPv3 HMAC verification in (1) Net-SNMP 5.2.x before 5.2.4.1, 5.3.x before 5.3.2.1, and 5.4.x before 5.4.1.1; (2) UCD-SNMP; (3) eCos; (4) Juniper Session and Resource Control (SRC) C-series 1.0.0 through 2.0.0; (5) NetApp (aka Network Appliance) Data ONTAP 7.3RC1 and 7.3RC2; (6) SNMP Research before 16.2; (7) multiple Cisco IOS, CatOS, ACE, and Nexus products; (8) Ingate Firewall 3.1.0 and later and SIParator 3.1.0 and later; (9) HP OpenView SNMP Emanate Master Agent 15.x; and possibly other products relies on the client to specify the HMAC length, which makes it easier for remote attackers to bypass SNMP authentication via a length value of 1, which only checks the first byte.
Family:	unix	Class:	vulnerability
Reference(s):	CVE-2008-0960	Version:	5
Platform(s):	Red Hat Enterprise Linux 3 CentOS Linux 3 Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5	Product(s):
Definition Synopsis:
OS Section: RHEL3, CentOS3 RHEL3 or CentOS3 The operating system installed on the system is Red Hat Enterprise Linux 3 AND CentOS Linux 3.x AND Configuration section net-snmp-utils is earlier than 0:5.0.9-2.30E.24 AND net-snmp is earlier than 0:5.0.9-2.30E.24 AND net-snmp-libs is earlier than 0:5.0.9-2.30E.24 AND net-snmp-perl is earlier than 0:5.0.9-2.30E.24 AND net-snmp-devel is earlier than 0:5.0.9-2.30E.24 OR OS Section: RHEL4, CentOS4, Oracle Linux 4 RHEL4, CentOS4 or Oracle Linux 4 The operating system installed on the system is Red Hat Enterprise Linux 4 AND CentOS Linux 4.x AND Oracle Linux 4.x AND Configuration section net-snmp-utils is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp-libs is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp-perl is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp-devel is earlier than 0:5.1.2-11.el4_6.11.3 OR OS Section: RHEL5, CentOS5, Oracle Linux 5 RHEL5, CentOS5 or Oracle Linux 5 The operating system installed on the system is Red Hat Enterprise Linux 5 AND CentOS Linux 5.x AND Oracle Linux 5.x AND Configuration section net-snmp-utils is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp-libs is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp-perl is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp-devel is earlier than 1:5.3.1-24.el5_2.1

Definition Id: oval:org.mitre.oval:def:11261

Oval ID:	oval:org.mitre.oval:def:11261
Title:	Buffer overflow in the __snprint_value function in snmp_get in Net-SNMP 5.1.4, 5.2.4, and 5.4.1, as used in SNMP.xs for Perl, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large OCTETSTRING in an attribute value pair (AVP).
Description:	Buffer overflow in the __snprint_value function in snmp_get in Net-SNMP 5.1.4, 5.2.4, and 5.4.1, as used in SNMP.xs for Perl, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large OCTETSTRING in an attribute value pair (AVP).
Family:	unix	Class:	vulnerability
Reference(s):	CVE-2008-2292	Version:	5
Platform(s):	Red Hat Enterprise Linux 3 CentOS Linux 3 Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5	Product(s):
Definition Synopsis:
OS Section: RHEL3, CentOS3 RHEL3 or CentOS3 The operating system installed on the system is Red Hat Enterprise Linux 3 AND CentOS Linux 3.x AND Configuration section net-snmp-utils is earlier than 0:5.0.9-2.30E.24 AND net-snmp is earlier than 0:5.0.9-2.30E.24 AND net-snmp-libs is earlier than 0:5.0.9-2.30E.24 AND net-snmp-perl is earlier than 0:5.0.9-2.30E.24 AND net-snmp-devel is earlier than 0:5.0.9-2.30E.24 OR OS Section: RHEL4, CentOS4, Oracle Linux 4 RHEL4, CentOS4 or Oracle Linux 4 The operating system installed on the system is Red Hat Enterprise Linux 4 AND CentOS Linux 4.x AND Oracle Linux 4.x AND Configuration section net-snmp-utils is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp-libs is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp-perl is earlier than 0:5.1.2-11.el4_6.11.3 AND net-snmp-devel is earlier than 0:5.1.2-11.el4_6.11.3 OR OS Section: RHEL5, CentOS5, Oracle Linux 5 RHEL5, CentOS5 or Oracle Linux 5 The operating system installed on the system is Red Hat Enterprise Linux 5 AND CentOS Linux 5.x AND Oracle Linux 5.x AND Configuration section net-snmp-utils is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp-libs is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp-perl is earlier than 1:5.3.1-24.el5_2.1 AND net-snmp-devel is earlier than 1:5.3.1-24.el5_2.1

CPE : Common Platform Enumeration

Type	Description	Count
Application	Juniper Session And Resource Control cpe:/a:juniper:session_and_resource_control:2.0 cpe:/a:juniper:session_and_resource_control:1.0	2
Application	Juniper Src Pe cpe:/a:juniper:src_pe:2.0 cpe:/a:juniper:src_pe:1.0	2
Application	Net-Snmp Net-Snmp cpe:/a:net-snmp:net-snmp:5.4.1 cpe:/a:net-snmp:net-snmp:5.2.4 cpe:/a:net-snmp:net-snmp:5.1.4	3

ExploitDB Exploits

id	Description
2008-11-12	Net-SNMP <= 5.1.4/5.2.4/5.4.1 Perl Module Buffer Overflow PoC
2008-06-12	SNMPv3 HMAC validation error Remote Authentication Bypass Exploit

Open Source Vulnerability Database (OSVDB)

id	Description
55248	HP OpenView SNMP Emanate Master Agent HMAC Authentication SNMPv3 Authenticati...
46669	Apple Mac OS X HMAC Authentication SNMPv3 Authentication Packet Spoofing
46276	Solaris snmpd(1M) HMAC Authentication SNMPv3 Authentication Packet Spoofing
46102	Ingate Firewall/SIParator HMAC Authentication SNMPv3 Authentication Packet Sp...
46088	Juniper Multiple Appliances HMAC Authentication SNMPv3 Authentication Packet ...
46086	Cisco Multiple Products HMAC Authentication SNMPv3 Authentication Packet Spoo...
46060	UCD-SNMP HMAC Authentication SNMPv3 Authentication Packet Spoofing
46059	Net-SNMP HMAC Authentication SNMPv3 Authentication Packet Spoofing
45136	Net-SNMP Perl Module perl/SNMP/SNMP.xs __snprint_value() Function Overflow