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CVE-2019-20892

Date: June 25, 2020

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.

Language: C

Severity Score

Related Resources (14)

https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-20892
https://sourceforge.net/p/net-snmp/bugs/2923/
https://www.oracle.com/security-alerts/cpujan2021.html
https://nvd.nist.gov/vuln/detail/CVE-2019-20892
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027
https://access.redhat.com/security/cve/CVE-2019-20892
https://bugzilla.redhat.com/show_bug.cgi?id=1663027
http://www.openwall.com/lists/oss-security/2020/06/25/4
https://usn.ubuntu.com/4410-1/
https://security.alpinelinux.org/vuln/CVE-2019-20892
https://security-tracker.debian.org/tracker/CVE-2019-20892
https://security.gentoo.org/glsa/202008-12
https://www.mend.io/vulnerability-database/CVE-2019-20892

Severity Score

Weakness Type (CWE)

Double Free

CWE-415

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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