Detections
Analytics

Photon OS 3.0: Runc PHSA-2022-3.0-0345

medium Nessus Plugin ID 156579

Synopsis

The remote PhotonOS host is missing multiple security updates.

Description

An update of the runc package has been released.

 - runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc, netlink is used internally as a serialization system for specifying the relevant container configuration to the `C` portion of the code (responsible for the based namespace setup of containers). In all versions of runc prior to 1.0.3, the encoder did not handle the possibility of an integer overflow in the 16-bit length field for the byte array attribute type, meaning that a large enough malicious byte array attribute could result in the length overflowing and the attribute contents being parsed as netlink messages for container configuration. This vulnerability requires the attacker to have some control over the configuration of the container and would allow the attacker to bypass the namespace restrictions of the container by simply adding their own netlink payload which disables all namespaces. The main users impacted are those who allow untrusted images with untrusted configurations to run on their machines (such as with shared cloud infrastructure). runc version 1.0.3 contains a fix for this bug. As a workaround, one may try disallowing untrusted namespace paths from your container. It should be noted that untrusted namespace paths would allow the attacker to disable namespace protections entirely even in the absence of this bug. (CVE-2021-43784)

Solution

Update the affected Linux packages.

See Also

https://github.com/vmware/photon/wiki/Security-Updates-3.0-345.md

Plugin Details

Severity: Medium

ID: 156579

File Name: PhotonOS_PHSA-2022-3_0-0345_runc.nasl

Version: 1.4

Type: local

Published: 1/10/2022

Updated: 1/24/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.2

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2021-43784

CVSS v3

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.5

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:vmware:photonos:runc, cpe:/o:vmware:photonos:3.0

Required KB Items: Host/local_checks_enabled, Host/PhotonOS/release, Host/PhotonOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/20/2021

Vulnerability Publication Date: 12/6/2021

Reference Information

CVE: CVE-2021-43784