F5 Networks BIG-IP : SNMPv3 HMAC verification vulnerability (SOL8939)

critical Nessus Plugin ID 78225

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

SNMPv3 HMAC verification relies on the client to specify the HMAC length. This flexibility allows remote attackers to bypass SNMP authentication by specifying a length value of 1 , which only checks the first byte.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution SOL8939.

See Also

https://support.f5.com/csp/article/K8939

Plugin Details

Severity: Critical

ID: 78225

File Name: f5_bigip_SOL8939.nasl

Version: 1.15

Type: local

Published: 10/10/2014

Updated: 1/11/2021

Configuration: Enable paranoid mode

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:F/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:f5:big-ip_application_security_manager, cpe:/a:f5:big-ip_global_traffic_manager, cpe:/a:f5:big-ip_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_webaccelerator, cpe:/h:f5:big-ip, cpe:/h:f5:big-ip_protocol_security_manager

Required KB Items: Host/local_checks_enabled, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/15/2008

Exploitable With

CANVAS (D2ExploitPack)

Reference Information

CVE: CVE-2008-0960

BID: 29623

CERT: 878044

CWE: 287