Double Free in Net-Snmp
CVE-2019-20892
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.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.023 (82.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Net-Snmp
- Oracle Zfs Storage Appliance Kit — versions 8.8
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027 (Exploit, Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- sourceforge.net/p/net-snmp/bugs/2923/ (Exploit, Third Party Advisory)
- github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9 (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/06/25/4 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4410-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202008-12 (vendor-advisory, Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2021.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-20892?
- CVE-2019-20892 is a medium-severity vulnerability in Net-Snmp, classified under Double Free. CVSS score: 6.5/10. Published 2020-06-25.
- How severe is CVE-2019-20892?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2019-20892 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.