Denial of service vulnerabilities in Net-snmp

Published: 2018-10-11

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-18066 CVE-2018-18065
CWE-ID	CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Net-snmp Server applications / Remote management servers, RDP, SSH
Vendor	net-snmp.sourceforge.net

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Null pointer dereference

EUVDB-ID: #VU15321

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-18066

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.

The vulnerability exists in the snmp_oid_compare() function, as defined in the snmplib/snmp_api.c source code file due to a NULL pointer exception bug. A remote attacker can send a malicious UDP packet, trigger a NULL pointer dereference condition, cause the application to crash.

Mitigation

Update to version 5.8.

Vulnerable software versions

Net-snmp: 5.0 - 5.7.3

CPE2.3

cpe:2.3:a:net-snmp_sourceforge_net:net-snmp:5.7.0:*:*:*:*:*:*:*

External links

http://dumpco.re/blog/net-snmp-5.7.3-remote-dos

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Null pointer dereference

EUVDB-ID: #VU15322