Vulnerability Name:

CVE-2021-36980 (CCN-205948)

Assigned:2020-11-25
Published:2020-11-25
Updated:2021-07-28
Summary: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.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-36980

Source: CCN
Type: Google Security Research Issue 27851
openvswitch:ofp_print_target: Heap-use-after-free in decode_NXAST_RAW_ENCAP

Source: MISC
Type: Patch, Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851

Source: XF
Type: UNKNOWN
openvswitch-cve202136980-dos(205948)

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

Source: CCN
Type: ovs GIT Repository
ofp-actions: Fix use-after-free while decoding RAW_ENCAP.

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/openvswitch/ovs/commit/65c61b0c23a0d474696d7b1cea522a5016a8aeb3

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/openvswitch/ovs/commit/6d67310f4d2524b466b98f05ebccc1add1e8cf35

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/openvswitch/ovs/commit/77cccc74deede443e8b9102299efc869a52b65b2

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/openvswitch/ovs/commit/8ce8dc34b5f73b30ce0c1869af9947013c3c6575

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/openvswitch/ovs/commit/9926637a80d0d243dbf9c49761046895e9d1a8e2

Vulnerable Configuration:Configuration 1:
  • cpe:/a:openvswitch:openvswitch:*:*:*:*:*:*:*:* (Version >= 2.11.0 and <= 2.15.0)

  • Configuration CCN 1:
  • cpe:/a:openvswitch:openvswitch:2.11.0:*:*:*:*:*:*:*
  • OR cpe:/a:openvswitch:openvswitch:2.15.0:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8085
    P
    libopenvswitch-2_14-0-2.14.2-150400.24.3.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:733
    P
    Security update for openvswitch (Moderate)
    2022-09-06
    oval:org.opensuse.security:def:734
    P
    Security update for openvswitch (Moderate)
    2022-09-06
    oval:org.opensuse.security:def:6115
    P
    Security update for openvswitch (Moderate) (in QA)
    2022-08-24
    BACK
    openvswitch openvswitch *
    openvswitch openvswitch 2.11.0
    openvswitch openvswitch 2.15.0