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Red Hat Enterprise Linux 7: RHSA-2020:1050-01 Moderate: CUPS Bug Fix

red hat
Calendar Grey March 31, 2020
Dist Redhat Esm H88
New cups release unveiled for CentOS 7, targeting unauthorized privilege elevation and enhancing security measures.
An update for cups is now available for Red Hat Enterprise Linux 7

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

After installing this update, the cupsd service will be restarted automatically.

Summary

The Common UNIX Printing System (CUPS) provides a portable printing layer for Linux, UNIX, and similar operating systems.
Security Fix(es):
* cups: Local privilege escalation to root due to insecure environment variable handling (CVE-2018-4180)
* cups: Manipulation of cupsd.conf by a local attacker resulting in limited reads of arbitrary files as root (CVE-2018-4181)
* cups: Predictable session cookie breaks CSRF protection (CVE-2018-4700)
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 7.8 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate red hat local privilege escalation bug fix cups CSRF

References

https://access.redhat.com/security/cve/CVE-2018-4180 https://access.redhat.com/security/cve/CVE-2018-4181 https://access.redhat.com/security/cve/CVE-2018-4700 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/7.8_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: cups-1.6.3-43.el7.src.rpm
noarch: cups-filesystem-1.6.3-43.el7.noarch.rpm
x86_64: cups-1.6.3-43.el7.x86_64.rpm cups-client-1.6.3-43.el7.x86_64.rpm cups-debuginfo-1.6.3-43.el7.i686.rpm cups-debuginfo-1.6.3-43.el7.x86_64.rpm cups-libs-1.6.3-43.el7.i686.rpm cups-libs-1.6.3-43.el7.x86_64.rpm cups-lpd-1.6.3-43.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: cups-debuginfo-1.6.3-43.el7.i686.rpm cups-debuginfo-1.6.3-43.el7.x86_64.rpm cups-devel-1.6.3-43.el7.i686.rpm cups-devel-1.6.3-43.el7.x86_64.rpm cups-ipptool-1.6.3-43.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: cups-1.6.3-43.el7.src.rpm
noarch: cups-filesystem-1.6.3-43.el7.noarch.rpm
x86_64: cups-1.6.3-43.el7.x86_64.rpm cups-client-1.6.3-43.el7.x86_64.rpm cups-debuginfo-1.6.3-43.el7.i686.rpm cups-debuginfo-1.6.3-43.el7.x86_64.rpm cups-libs-1.6.3-43.el7.i686.rpm cups-libs-1.6.3-43.el7.x86_64.rpm cups-lpd-1.6.3-43.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: cups-debuginfo-1.6.3-43.el7.i686.rpm cups-debuginfo-1.6.3-43.el7.x86_64.rpm cups-devel-1.6.3-43.el7.i686.rpm cups-devel-1.6.3-43.el7.x86_64.rpm cups-ipptool-1.6.3-43.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: cups-1.6.3-43.el7.src.rpm


Read the Full Advisory


Advisory ID: RHSA-2020:1050-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1050
Issue date: 2020-03-31

Topic

An update for cups is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate red hat local privilege escalation bug fix cups CSRF

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1607282 - CVE-2018-4180 cups: Local privilege escalation to root due to insecure environment variable handling

1607291 - CVE-2018-4181 cups: Manipulation of cupsd.conf by a local attacker resulting in limited reads of arbitrary files as root

1649347 - CVE-2018-4700 cups: Predictable session cookie breaks CSRF protection

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