PT-2018-3134 · Net Snmp+2 · Net-Snmp+2

Magnusstubman · Published 2018-10-08 · Updated 2020-04-08 · CVE-2018-18066

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Net-SNMP versions prior to 5.8

Description The issue is related to a NULL Pointer Exception bug in the snmp oid compare function. This bug can be exploited by an unauthenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

Recommendations For Net-SNMP versions prior to 5.8, update to version 5.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the snmp oid compare function to minimize the risk of exploitation.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2019-04208

CESA-2020_1081

CVE-2018-18066

RHSA-2020:1081

RHSA-2020:2539

RHSA-2020_1081

Affected Products

Centos

Net-Snmp

Red Hat

References · 22

• 🔥 https://dumpco.re/blog/net-snmp-5.7.3-remote-dos · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-18066 · Security Note
• https://osv.dev/vulnerability/CVE-2018-18066 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-18066 · Vendor Advisory
• https://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791 · Patch
• https://bdu.fstec.ru/vul/2019-04208 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18066 · Security Note
• https://linux.oracle.com/errata/ELSA-2020-1081.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-18066 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-18066 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-18066 · Vendor Advisory
• https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d · Patch
• https://ubuntu.com/security/CVE-2018-18066 · Vendor Advisory
• https://lists.centos.org/pipermail/centos-cr-announce/2020-April/012540.html · Note
• https://access.redhat.com/security/cve/CVE-2018-18066 · Note