[RHSA-2020:4464-01] Moderate: libxslt security update

[Security announcements for all Red Hat products and services.]

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                   Red Hat Security Advisory

Synopsis:          Moderate: libxslt security update
Advisory ID:       RHSA-2020:4464-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:4464
Issue date:        2020-11-03
CVE Names:         CVE-2019-11068 CVE-2019-18197 
=====================================================================

1. Summary:

An update for libxslt 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

libxslt is a library for transforming XML files into other textual formats
(including HTML, plain text, and other XML representations of the
underlying data) using the standard XSLT stylesheet transformation
mechanism. 

Security Fix(es):

* libxslt: xsltCheckRead and xsltCheckWrite routines security bypass by
crafted URL (CVE-2019-11068)

* libxslt: use after free in xsltCopyText in transform.c could lead to
information disclosure (CVE-2019-18197)

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 8.3 Release Notes linked from the References section.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1709697 - CVE-2019-11068 libxslt: xsltCheckRead and xsltCheckWrite routines security bypass by crafted URL
1770768 - CVE-2019-18197 libxslt: use after free in xsltCopyText in transform.c could lead to information disclosure

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

aarch64:
libxslt-debuginfo-1.1.32-5.el8.aarch64.rpm
libxslt-debugsource-1.1.32-5.el8.aarch64.rpm
libxslt-devel-1.1.32-5.el8.aarch64.rpm

ppc64le:
libxslt-debuginfo-1.1.32-5.el8.ppc64le.rpm
libxslt-debugsource-1.1.32-5.el8.ppc64le.rpm
libxslt-devel-1.1.32-5.el8.ppc64le.rpm

s390x:
libxslt-debuginfo-1.1.32-5.el8.s390x.rpm
libxslt-debugsource-1.1.32-5.el8.s390x.rpm
libxslt-devel-1.1.32-5.el8.s390x.rpm

x86_64:
libxslt-debuginfo-1.1.32-5.el8.i686.rpm
libxslt-debuginfo-1.1.32-5.el8.x86_64.rpm
libxslt-debugsource-1.1.32-5.el8.i686.rpm
libxslt-debugsource-1.1.32-5.el8.x86_64.rpm
libxslt-devel-1.1.32-5.el8.i686.rpm
libxslt-devel-1.1.32-5.el8.x86_64.rpm

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
libxslt-1.1.32-5.el8.src.rpm

aarch64:
libxslt-1.1.32-5.el8.aarch64.rpm
libxslt-debuginfo-1.1.32-5.el8.aarch64.rpm
libxslt-debugsource-1.1.32-5.el8.aarch64.rpm

ppc64le:
libxslt-1.1.32-5.el8.ppc64le.rpm
libxslt-debuginfo-1.1.32-5.el8.ppc64le.rpm
libxslt-debugsource-1.1.32-5.el8.ppc64le.rpm

s390x:
libxslt-1.1.32-5.el8.s390x.rpm
libxslt-debuginfo-1.1.32-5.el8.s390x.rpm
libxslt-debugsource-1.1.32-5.el8.s390x.rpm

x86_64:
libxslt-1.1.32-5.el8.i686.rpm
libxslt-1.1.32-5.el8.x86_64.rpm
libxslt-debuginfo-1.1.32-5.el8.i686.rpm
libxslt-debuginfo-1.1.32-5.el8.x86_64.rpm
libxslt-debugsource-1.1.32-5.el8.i686.rpm
libxslt-debugsource-1.1.32-5.el8.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2019-11068
https://access.redhat.com/security/cve/CVE-2019-18197
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/

8. Contact:

The Red Hat security contact is <secalert at redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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