NULL Pointer Dereference Affecting net-snmp-agent-libs package, versions <1:5.7.2-43.el7_7.6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-NETSNMPAGENTLIBS-4946148
- published26 Jul 2021
- disclosed6 Oct 2015
Introduced: 6 Oct 2015
CVE-2018-18066 (opens in a new tab)How to fix?
Upgrade RHEL:7 net-snmp-agent-libs to version 1:5.7.2-43.el7_7.6 or higher.
This issue was patched in RHSA-2020:2539.
NVD Description
Note: Versions mentioned in the description apply only to the upstream net-snmp-agent-libs package and not the net-snmp-agent-libs package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- https://security.netapp.com/advisory/ntap-20181107-0001/
- https://access.redhat.com/security/cve/CVE-2018-18066
- https://dumpco.re/blog/net-snmp-5.7.3-remote-dos
- 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