NULL Pointer Dereference Affecting net-snmp-utils package, versions <1:5.7.2-48.amzn2.1
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-AMZN2-NETSNMPUTILS-1681059
- published27 Sept 2021
- disclosed8 Oct 2018
Introduced: 8 Oct 2018
CVE-2018-18066 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 net-snmp-utils to version 1:5.7.2-48.amzn2.1 or higher.
This issue was patched in ALAS2-2020-1454.
NVD Description
Note: Versions mentioned in the description apply only to the upstream net-snmp-utils package and not the net-snmp-utils package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 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/
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=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