RHSA-2021:4361 - Security Advisory

Topic

An update for NetworkManager is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

NetworkManager is a system network service that manages network devices and connections, attempting to keep active network connectivity when available. Its capabilities include managing Ethernet, wireless, mobile broadband (WWAN), and PPPoE devices, as well as providing VPN integration with a variety of different VPN services.

The following packages have been upgraded to a later upstream version: NetworkManager (1.32.10). (BZ#1934465)

Security Fix(es):

• systemd: DHCP FORCERENEW authentication not implemented can cause a system running the DHCP client to have its network reconfigured (CVE-2020-13529)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat CodeReady Linux Builder for x86_64 8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x

Fixes

• BZ - 1791212 - [Azure][RHEL8][RFE] add a secondary ip to the primary/first interface of a redhat instance automatically when the change is applied on the infrastructure side
• BZ - 1820770 - Keepalived assignment of a deprecated IPv6 Virtual IP triggers "set hostname"
• BZ - 1825666 - ipv6 nfs mount point does not mount automatically at boot, remote-fs-pre.target starts too early and conflicts with network start up
• BZ - 1832112 - Document the type of each LLDP attribute of libnm
• BZ - 1832273 - LLDP: add lldp status device property
• BZ - 1847125 - [RFE] Improve 20% performance on creating 1000 bridge over 1000 VLANs
• BZ - 1847894 - Describe qdiscs and tfilters in nm-settings manpage
• BZ - 1852317 - [RFE] Ability to report DNS_SEARCH field via nmcli
• BZ - 1890234 - NetworkManager behavior for bonds + mtu changes from 8.1 to 8.2
• BZ - 1899372 - [RFE] Support pause parameters of ethtool [rhel-8]
• BZ - 1907960 - Cannot create VLAN interface with name `vlan0`
• BZ - 1912236 - [Azure][RHEL-8.5] nm-cloud-setup.service makes network connectivity loss
• BZ - 1912423 - [NMCI] [abrt] [faf] NetworkManager: raise(): /usr/sbin/NetworkManager killed by 6
• BZ - 1915276 - crash when deleting veth device profile
• BZ - 1915278 - null error when deleting veth device
• BZ - 1928078 - Provide a way to ignore existing TC qdiscs and filters
• BZ - 1933719 - [abrt] [faf] NetworkManager: _g_log_abort(): /usr/sbin/NetworkManager killed by 5
• BZ - 1934122 - nmcli shows 2 connections when using an ip argument in the kernel cmdline
• BZ - 1934291 - wpa_supplicant.service stops with systemctl isolate mulit-user.target runlevel change
• BZ - 1934465 - Rebase NetworkManager to latest upstream release in RHEL 8.5
• BZ - 1935842 - [RFE] Add bridge_role in 802-3-ethernet.s390-options using nmcli
• BZ - 1936610 - setting MTU on VLAN subinterface of bonded interface is ignored
• BZ - 1940435 - When adding host to RHV-M with LACP bond, '"ad_actor_system=00:00:00:00:00:00' is seen in messages again [rhel-8.5]
• BZ - 1940504 - Support for ip= boot argument with static IP and no interface specified [rhel-8.5.0]
• BZ - 1940934 - RFE: need kernel command line options to configure NICs with autoneg=off speed=1000
• BZ - 1942331 - [RFE] Allow to set physical interfaces in promiscuous mode [NM]
• BZ - 1945282 - [NMCI] Automatic connection not removed when veth device gets removed
• BZ - 1955101 - [NMCI] NM_reboot_openvswitch_vlan_configuration failure
• BZ - 1959397 - CVE-2020-13529 systemd: DHCP FORCERENEW authentication not implemented can cause a system running the DHCP client to have its network reconfigured
• BZ - 1959461 - NetworkManager ignoring Classless routes
• BZ - 1959934 - NetworkManager doesn't honour tlb_dynamic_lb=0 when creating a bonding device with mode=balance-alb
• BZ - 1959961 - [SNO][assisted-operator][nmstate] Bond Interface is down when booting from the discovery ISO
• BZ - 1970335 - Incorrect set hostname to localhost using DNS reverse lookup of ipv6 address
• BZ - 1971527 - Static route on latest AWS RHEL 8.4 AMI not taking affect using nmcli
• BZ - 1973199 - [NMCI] crash when networking disabled in ovs
• BZ - 1977984 - [nm-cloud-setup] [AWS] default route inter-feres with other subnets on the VM (making containers unreachable) [rhel-8.5]
• BZ - 1979192 - NetworkManager configures wrong, spurious "local" route for IP address after DHCP address change
• BZ - 1979387 - [RFE] support "filename" DHCP option for network boot with nm-initrd-generator
• BZ - 1982403 - [NMCI] ovs_set_firewalld_zone test fail
• BZ - 1988751 - Incosistent behavior in the order of IPv6 addresses at boot vs. when restarting NetworkManager
• BZ - 2004212 - IPv6 Default gateway deleted from routing table

CVEs

• CVE-2020-13529

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/