CVE-2021-36980

openvswitch: use-after-free in decode_NXAST_RAW_ENCAP during the decoding of a RAW_ENCAP action

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Open vSwitch (también se conoce como openvswitch) versiones 2.11.0 hasta 2.15.0, presenta un uso de la memoria previamente liberada en la función decode_NXAST_RAW_ENCAP (llamado desde ofpact_decode y ofpacts_decode) durante la decodificación de una acción RAW_ENCAP

Open vSwitch (aka openvswitch) 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.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-20 CVE Reserved
2021-07-20 CVE Published
2024-04-04 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (11)

URL	Tag	Source
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openvswitch/OSV-2020-2197.yaml	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851	2023-11-26
https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f	2023-11-26
https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3	2023-11-26
https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35	2023-11-26
https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2	2023-11-26
https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575	2023-11-26
https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2	2023-11-26

URL	Date	SRC
https://security.gentoo.org/glsa/202311-16	2023-11-26
https://access.redhat.com/security/cve/CVE-2021-36980	2021-10-20
https://bugzilla.redhat.com/show_bug.cgi?id=1984473	2021-10-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openvswitch Search vendor "Openvswitch"		Openvswitch Search vendor "Openvswitch" for product "Openvswitch"				>= 2.11.0 <= 2.15.0 Search vendor "Openvswitch" for product "Openvswitch" and version " >= 2.11.0 <= 2.15.0"		-		Affected