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archlinuxArchLinuxASA-202107-40
HistoryJul 20, 2021 - 12:00 a.m.

[ASA-202107-40] openvswitch: arbitrary code execution

2021-07-2000:00:00
security.archlinux.org
111

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

0.001 Low

EPSS

Percentile

51.1%

Arch Linux Security Advisory ASA-202107-40

Severity: Medium
Date : 2021-07-20
CVE-ID : CVE-2021-36980
Package : openvswitch
Type : arbitrary code execution
Remote : No
Link : https://security.archlinux.org/AVG-2177

Summary

The package openvswitch before version 2.15.1-1 is vulnerable to
arbitrary code execution.

Resolution

Upgrade to 2.15.1-1.

pacman -Syu β€œopenvswitch>=2.15.1-1”

The problem has been fixed upstream in version 2.15.1.

Workaround

None.

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.

Impact

An attacker could execute arbitrary code through crafted Open vSwitch
Actions.

References

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/openvswitch/OSV-2020-2197.yaml
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851
https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f
https://security.archlinux.org/CVE-2021-36980

OSVersionArchitecturePackageVersionFilename
ArchLinuxanyanyopenvswitch<Β 2.15.1-1UNKNOWN

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

0.001 Low

EPSS

Percentile

51.1%