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    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.

    Published:Jan 2, 2020
    Last Modified:Nov 21, 2024
    EPS:Jun 25, 2020
    EPSS Score:0.00537
    CVSS Score:6.5

    Affected Products

    Vendor
    Net-snmp
    Product
    Net-snmp
    Vendor
    Oracle
    Product
    Zfs Storage Appliance Kit
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    http://www.openwall.com/lists/oss-security/2020/06/25/4https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027https://bugzilla.redhat.com/show_bug.cgi?id=1663027https://sourceforge.net/p/net-snmp/bugs/2923/http://www.openwall.com/lists/oss-security/2020/06/25/4https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027https://bugzilla.redhat.com/show_bug.cgi?id=1663027https://sourceforge.net/p/net-snmp/bugs/2923/

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-89147 (CVSS 8.7) — Net-SNMP through 5.9.5.2 contains a denial of service vulnerability in the SMUX module where smux_accept() per…
    CVE-2025-68615 (CVSS 9.8) — net-snmp is a SNMP application library, tools and daemon. Prior to versions 5.9.5 and 5.10.pre2, a specially c…
    CVE-2022-44792 (CVSS 6.5) — handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3 has a NULL Pointer Exc…
    CVE-2022-44793 (CVSS 6.5) — handle_ipv6IpForwarding in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.4.3 through 5.9.3 has a NULL Point…
    CVE-2022-24810 (CVSS 6.5) — net-snmp provides various tools relating to the Simple Network Management Protocol. Prior to version 5.9.2, a …
    CVE-2022-24808 (CVSS 6.5) — net-snmp provides various tools relating to the Simple Network Management Protocol. Prior to version 5.9.2, a …
    CVE-2022-24805 (CVSS 6.5) — net-snmp provides various tools relating to the Simple Network Management Protocol. Prior to version 5.9.2, a …
    CVE-2022-24806 (CVSS 6.5) — net-snmp provides various tools relating to the Simple Network Management Protocol. Prior to version 5.9.2, a …
    CVE-2022-24809 (CVSS 6.5) — net-snmp provides various tools relating to the Simple Network Management Protocol. Prior to version 5.9.2, a …
    CVE-2022-24807 (CVSS 6.5) — net-snmp provides various tools relating to the Simple Network Management Protocol. Prior to version 5.9.2, a …

    References

    http://www.openwall.com/lists/oss-security/2020/06/25/4
    https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027
    https://bugzilla.redhat.com/show_bug.cgi?id=1663027
    https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9
    https://security.gentoo.org/glsa/202008-12
    https://sourceforge.net/p/net-snmp/bugs/2923/
    https://usn.ubuntu.com/4410-1/
    https://www.oracle.com/security-alerts/cpujan2021.html
    http://www.openwall.com/lists/oss-security/2020/06/25/4
    https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027
    https://bugzilla.redhat.com/show_bug.cgi?id=1663027
    https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9
    https://security.gentoo.org/glsa/202008-12
    https://sourceforge.net/p/net-snmp/bugs/2923/
    https://usn.ubuntu.com/4410-1/
    https://www.oracle.com/security-alerts/cpujan2021.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High