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

high Nessus Plugin ID 78225

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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 K8939.

See Also

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

Plugin Details

Severity: High

ID: 78225

File Name: f5_bigip_SOL8939.nasl

Version: 1.16

Type: Local

Published: 10/10/2014

Updated: 10/21/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.77

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2008-0960

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:F/RL:O/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, Settings/ParanoidReport, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version

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

CWE: 287

CERT: 878044