Incorrect Authorization Affecting net-snmp package, versions <5.4.3~dfsg-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
2.9% (87th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NETSNMP-19698280
  • published12 Sept 2026
  • disclosed12 Feb 2009

Introduced: 12 Feb 2009

CVE-2008-6123  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Echo:latest net-snmp to version 5.4.3~dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream net-snmp package and not the net-snmp package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

The netsnmp_udp_fmtaddr function (snmplib/snmpUDPDomain.c) in net-snmp 5.0.9 through 5.4.2.1, when using TCP wrappers for client authorization, does not properly parse hosts.allow rules, which allows remote attackers to bypass intended access restrictions and execute SNMP queries, related to "source/destination IP address confusion."

CVSS Base Scores

version 3.1