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Vulnerability · Published Jul 20, 2021 · Assigned by mitre

CVE-2021-36980

Medium 5.5

In plain English

A medium-severity use-after-free in the openvswitch package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)1.2%top 32.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20openvswitch2.12.3-r2ALPINE-CVE-2021-36980
Alpine:v3.21openvswitch2.12.3-r2ALPINE-CVE-2021-36980
Alpine:v3.22openvswitch2.12.3-r2ALPINE-CVE-2021-36980
Alpine:v3.23openvswitch2.12.3-r2ALPINE-CVE-2021-36980
Alpine:v3.24openvswitch2.12.3-r2ALPINE-CVE-2021-36980
Debian:12openvswitch2.15.0+ds1-10DEBIAN-CVE-2021-36980
Debian:13openvswitch2.15.0+ds1-10DEBIAN-CVE-2021-36980
Debian:14openvswitch2.15.0+ds1-10DEBIAN-CVE-2021-36980

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References