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CVE-2021-36980

Published: 20 July 2021

Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a RAW_ENCAP action.

Notes

AuthorNote
mdeslaur
per Google, this was introduced in
418a7a84245f5fbe589dd1267463fc9ba27a1dd6

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
openvswitch
Launchpad, Ubuntu, Debian
hirsute
Released (2.15.0-0ubuntu3.1)
jammy Not vulnerable

trusty Does not exist

xenial Not vulnerable
(code not present)
upstream Needs triage

groovy Ignored
(end of life)
bionic Not vulnerable
(code not present)
impish Not vulnerable

focal
Released (2.13.3-0ubuntu0.20.04.2)
Patches:
upstream: https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f (2.15)
upstream: https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3 (2.11)
upstream: https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35 (2.13)
upstream: https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2 (master)
upstream: https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575 (2.14)
upstream: https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2 (2.12)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H