Vulnerability Report

CVE-2021-36980

Title: Openvswitch Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2021-36980.

CWE Category CWE-416
Published Date Jul 20, 2021
Modified Date May 05, 2025
Exploit Status Not Found
Score 5.5 CVSS v3.1
Exploit Probability (EPSS)
1.18%

Vulnerability Summary

CVE-2021-36980: 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.

Impacted Vendors

O
openvswitch 1

Reference Links

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851 https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openvswitch/OSV-2020-2197.yaml https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3 https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35 https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2 https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575 https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2 https://security.gentoo.org/glsa/202311-16 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851 https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openvswitch/OSV-2020-2197.yaml https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3 https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35 https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2 https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575 https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2 https://security.gentoo.org/glsa/202311-16
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.5
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity MEDIUM
5.5
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.3
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-36980 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.