Moderate: sudo security, bug fix, and enhancement update

Synopsis

Moderate: sudo security, bug fix, and enhancement update

Type/Severity

Security Advisory: Moderate

Topic

An update for sudo 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

The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.

The following packages have been upgraded to a later upstream version: sudo (1.8.29). (BZ#1733961)

Security Fix(es):

• sudo: attacker with access to a Runas ALL sudoer account can impersonate a nonexistent user (CVE-2019-19232)
  

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 8.2 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

Fixes

• BZ - 1679508 - sudo does not work with notbefore/after using sssd
• BZ - 1715516 - sudo-1.8.19p2-10.el7.x86_64 NOTBEFORE showing value of sudoNotAfter Ldap attribute
• BZ - 1733961 - Rebase SUDO to the latest upstream version
• BZ - 1786704 - CVE-2019-19232 sudo: attacker with access to a Runas ALL sudoer account can impersonate a nonexistent user
• BZ - 1796518 - [RFE] add optional check for the target user shell

CVEs

• CVE-2019-19232

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index