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
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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 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

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-18065

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 _set_key() function, as defined in the agent/helpers/table_container.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 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?



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