RHSA-2020:4003 - Security Advisory

Topic

An update for NetworkManager is now available for Red Hat Enterprise Linux 7.

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.

Security Fix(es):

• NetworkManager: user configuration not honoured leaving the connection unauthenticated via insecure defaults (CVE-2020-10754)

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 7.9 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 Server 7 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le

Fixes

• BZ - 1706646 - The network target is reached before IPv6 adresses are assigned
• BZ - 1737774 - [abrt] [faf] NetworkManager: raise(): /usr/sbin/NetworkManager killed by 6
• BZ - 1758550 - conditional statements from dhclient.conf not merged
• BZ - 1765566 - Bringing up one slave of team0 also brings up team1
• BZ - 1785039 - nmcli command to add ipv4.gateway does not work when DEFROUTE=no and throws no error
• BZ - 1797915 - [abrt] [faf] g_ascii_strtoll() for "10" failed with errno=11 (Resource temporarily unavailable)
• BZ - 1832170 - Cannot bring up ip6gre tunnel connection via NetworkManager
• BZ - 1841041 - CVE-2020-10754 NetworkManager: user configuration not honoured leaving the connection unauthenticated via insecure defaults

CVEs

• CVE-2020-10754

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index