Vulnerability Description
net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. NOTE: this affects net-snmp packages shipped to end users by multiple Linux distributions, but might not affect an upstream release.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Net-Snmp | Net-Snmp | <= 5.8 |
| Oracle | Zfs Storage Appliance Kit | 8.8 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2020/06/25/4ExploitMailing ListThird Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027ExploitIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1663027ExploitIssue TrackingThird Party Advisory
- https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cdPatchThird Party Advisory
- https://security.gentoo.org/glsa/202008-12Third Party Advisory
- https://sourceforge.net/p/net-snmp/bugs/2923/ExploitThird Party Advisory
- https://usn.ubuntu.com/4410-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.htmlPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/06/25/4ExploitMailing ListThird Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027ExploitIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1663027ExploitIssue TrackingThird Party Advisory
- https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cdPatchThird Party Advisory
- https://security.gentoo.org/glsa/202008-12Third Party Advisory
- https://sourceforge.net/p/net-snmp/bugs/2923/ExploitThird Party Advisory
- https://usn.ubuntu.com/4410-1/Third Party Advisory
FAQ
What is CVE-2019-20892?
CVE-2019-20892 is a vulnerability with a CVSS score of 6.5 (MEDIUM). net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. NOTE: this affects net-snmp packages shipped to end users by multiple Lin...
How severe is CVE-2019-20892?
CVE-2019-20892 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-20892?
Check the references section above for vendor advisories and patch information. Affected products include: Net-Snmp Net-Snmp, Oracle Zfs Storage Appliance Kit.