CVE-2018-18066

snmp_oid_compare in snmplib/snmp_api.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an unauthenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

CVSS v3.1 CNA

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.0 NVD

7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 NVD

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

3.59% chance of exploitation in the next 30 days, 89th percentile

Published

2018-10-08

Updated

2025-05-06

Proof-of-concept exploits (1)

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

Security advisories

• https://security.netapp.com/advisory/ntap-20181107-0001
• https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d
• https://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791
• https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

References

• CVE Record
• NVD entry