Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2019-20892

Double Free

Published: Jun 25, 2020 | Modified: Nov 21, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-20892
CWEhttps://cwe.mitre.org/data/definitions/415.html

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.

Weakness

The product calls free() twice on the same memory address.

Affected Software

Name Vendor Start Version End Version
Net-snmp Net-snmp * 5.8 (including)
Red Hat Enterprise Linux 8 RedHat net-snmp-1:5.8-12.el8_1.1 *
Red Hat Enterprise Linux 8 RedHat net-snmp-1:5.8-12.el8_1.1 *
Net-snmp Ubuntu devel *
Net-snmp Ubuntu esm-infra/focal *
Net-snmp Ubuntu focal *
Net-snmp Ubuntu trusty *

Potential Mitigations

References

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