Detections
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FreeBSD : net-snmp -- DoS for SNMP agent via crafted GETBULK request (daf045d7-b211-11dd-a987-000c29ca8953)
medium Nessus Plugin ID 34770
Synopsis
The remote FreeBSD host is missing one or more security-related updates.Description
Wes Hardaker reports through sourceforge.net forum :SECURITY ISSUE: A bug in the getbulk handling code could let anyone with even minimal access crash the agent. If you have open access to your snmp agents (bad bad bad; stop doing that!) or if you don't trust everyone that does have access to your agents you should updated immediately to prevent potential denial of service attacks.
Description at cve.mitre.org additionally clarifies :
Integer overflow in the netsnmp_create_subtree_cache function in agent/snmp_agent.c in net-snmp 5.4 before 5.4.2.1, 5.3 before 5.3.2.3, and 5.2 before 5.2.5.1 allows remote attackers to cause a denial of service (crash) via a crafted SNMP GETBULK request, which triggers a heap-based buffer overflow, related to the number of responses or repeats.
Solution
Update the affected packages.See Also
https://sourceforge.net/p/legacy_/forum/forum.php?forum_id=882903
https://www.openwall.com/lists/oss-security/2008/10/31/1
Plugin Details
Severity: Medium
ID: 34770
File Name: freebsd_pkg_daf045d7b21111dda987000c29ca8953.nasl
Version: 1.18
Type: local
Family: FreeBSD Local Security Checks
Published: 11/14/2008
Updated: 1/6/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Vulnerability Information
CPE: p-cpe:/a:freebsd:freebsd:net-snmp, cpe:/o:freebsd:freebsd
Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info
Patch Publication Date: 11/14/2008
Vulnerability Publication Date: 10/12/2008
Reference Information
CVE: CVE-2008-4309
CWE: 20