GLSA-200808-02 : Net-SNMP: Multiple vulnerabilities

Critical Nessus Plugin ID 33832

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-200808-02 (Net-SNMP: Multiple vulnerabilities)

Wes Hardaker reported that the SNMPv3 HMAC verification relies on the client to specify the HMAC length (CVE-2008-0960). John Kortink reported a buffer overflow in the Perl bindings of Net-SNMP when processing the OCTETSTRING in an attribute value pair (AVP) received by an SNMP agent (CVE-2008-2292).
Impact :

An attacker could send SNMPv3 packets to an instance of snmpd providing a valid user name and an HMAC length value of 1, and easily conduct brute-force attacks to bypass SNMP authentication. An attacker could further entice a user to connect to a malicious SNMP agent with an SNMP client using the Perl bindings, possibly resulting in the execution of arbitrary code.
Workaround :

There is no known workaround at this time.

Solution

All Net-SNMP users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-analyzer/net-snmp-5.4.1.1'

See Also

https://security.gentoo.org/glsa/200808-02

Plugin Details

Severity: Critical

ID: 33832

File Name: gentoo_GLSA-200808-02.nasl

Version: 1.23

Type: local

Published: 2008/08/07

Updated: 2018/07/11

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 8.3

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:net-snmp, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2008/08/06

Exploitable With

CANVAS (D2ExploitPack)

Reference Information

CVE: CVE-2008-0960, CVE-2008-2292

BID: 29212, 29623

GLSA: 200808-02

CWE: 119, 287