CVE-2019-20892
Published: 25 June 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.
Notes
| Author | Note |
|---|---|
| mdeslaur | Possibly affects 5.8 only. Could not reproduce crash in eoan and earlier, marking as not-affected. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
net-snmp Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| eoan |
Not vulnerable
|
|
| focal |
Released
(5.8+dfsg-2ubuntu2.1)
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
|
|
|
Patches: upstream: https://github.com/net-snmp/net-snmp/commit/92ccd5a82a019fbfa835cc8ab2294cf0ca48c8f2 upstream: https://github.com/net-snmp/net-snmp/commit/adc9b71aba9168ec64149345ea37a1acc11875c6 upstream: https://github.com/net-snmp/net-snmp/commit/7384a8b550d4ed4a00e41b72229cfcc124926b06 upstream: https://github.com/net-snmp/net-snmp/commit/39381c4d20dd8042870c28ae3b0c16291e50b705 upstream: https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9 upstream: https://github.com/net-snmp/net-snmp/commit/87bd90d04f20dd3f73e3e7e631a442ccd419b9d3 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |