Improper Input Validation Affecting net-snmp package, versions <5.4.3~dfsg-1


Severity

Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    0.51% (77th percentile)

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  • Snyk ID SNYK-DEBIANUNSTABLE-NETSNMP-310867
  • published 12 Feb 2009
  • disclosed 12 Feb 2009

How to fix?

Upgrade Debian:unstable 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 Debian. See How to fix? for Debian:unstable 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 Scores

version 3.1
Expand this section

NVD

5.3 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None