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TITLE:
Net-SNMP Agent MIB Subtree Handling Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA48938

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/48938/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=48938

RELEASE DATE:
2012-04-26

DISCUSS ADVISORY:
http://secunia.com/advisories/48938/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/48938/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=48938

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in Net-SNMP, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an array-indexing error in the
"handle_nsExtendOutput2Table()" function
(agent/mibgroup/agent/extend.c) when processing certain MIB subtrees.
This can be exploited to cause the "snmpd" process to crash via a
specially crafted SNMP GET request.

Successful exploitation requires read privileges to a subtree.

The vulnerability is reported in version 5.7.1. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted hosts only.

PROVIDED AND/OR DISCOVERED BY:
Reported by Sergio Freire in a Red Hat bug report.

ORIGINAL ADVISORY:
https://bugzilla.redhat.com/show_bug.cgi?id=815813

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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