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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: libwebp security update
Advisory ID:       RHSA-2021:2365-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:2365
Issue date:        2021-06-09
CVE Names:         CVE-2018-25011 CVE-2020-36328 CVE-2020-36329 
=====================================================================

1. Summary:

An update for libwebp is now available for Red Hat Enterprise Linux 8.1
Extended Update Support.

Red Hat Product Security has rated this update as having a security impact
of Important. 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 EUS (v. 8.1) - aarch64, ppc64le, s390x,
 x86_64

3. Description:

The libwebp packages provide a library and tools for the WebP graphics
format. WebP is an image format with a lossy compression of digital
photographic images. WebP consists of a codec based on the VP8 format, and
a container based on the Resource Interchange File Format (RIFF).
Webmasters, web developers and browser developers can use WebP to compress,
archive, and distribute digital images more efficiently.

Security Fix(es):

* libwebp: heap-based buffer overflow in PutLE16() (CVE-2018-25011)

* libwebp: heap-based buffer overflow in WebPDecode*Into functions
(CVE-2020-36328)

* libwebp: use-after-free in EmitFancyRGB() in dec/io_dec.c
(CVE-2020-36329)

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.

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/):

1956829 - CVE-2020-36328 libwebp: heap-based buffer overflow in WebPDecode*Into
 functions
1956843 - CVE-2020-36329 libwebp: use-after-free in EmitFancyRGB() in
 dec/io_dec.c
1956919 - CVE-2018-25011 libwebp: heap-based buffer overflow in PutLE16()

6. Package List:

Red Hat Enterprise Linux AppStream EUS (v. 8.1):

Source:
libwebp-1.0.0-4.el8_1.src.rpm

aarch64:
libwebp-1.0.0-4.el8_1.aarch64.rpm
libwebp-debuginfo-1.0.0-4.el8_1.aarch64.rpm
libwebp-debugsource-1.0.0-4.el8_1.aarch64.rpm
libwebp-devel-1.0.0-4.el8_1.aarch64.rpm
libwebp-java-debuginfo-1.0.0-4.el8_1.aarch64.rpm
libwebp-tools-debuginfo-1.0.0-4.el8_1.aarch64.rpm

ppc64le:
libwebp-1.0.0-4.el8_1.ppc64le.rpm
libwebp-debuginfo-1.0.0-4.el8_1.ppc64le.rpm
libwebp-debugsource-1.0.0-4.el8_1.ppc64le.rpm
libwebp-devel-1.0.0-4.el8_1.ppc64le.rpm
libwebp-java-debuginfo-1.0.0-4.el8_1.ppc64le.rpm
libwebp-tools-debuginfo-1.0.0-4.el8_1.ppc64le.rpm

s390x:
libwebp-1.0.0-4.el8_1.s390x.rpm
libwebp-debuginfo-1.0.0-4.el8_1.s390x.rpm
libwebp-debugsource-1.0.0-4.el8_1.s390x.rpm
libwebp-devel-1.0.0-4.el8_1.s390x.rpm
libwebp-java-debuginfo-1.0.0-4.el8_1.s390x.rpm
libwebp-tools-debuginfo-1.0.0-4.el8_1.s390x.rpm

x86_64:
libwebp-1.0.0-4.el8_1.i686.rpm
libwebp-1.0.0-4.el8_1.x86_64.rpm
libwebp-debuginfo-1.0.0-4.el8_1.i686.rpm
libwebp-debuginfo-1.0.0-4.el8_1.x86_64.rpm
libwebp-debugsource-1.0.0-4.el8_1.i686.rpm
libwebp-debugsource-1.0.0-4.el8_1.x86_64.rpm
libwebp-devel-1.0.0-4.el8_1.i686.rpm
libwebp-devel-1.0.0-4.el8_1.x86_64.rpm
libwebp-java-debuginfo-1.0.0-4.el8_1.i686.rpm
libwebp-java-debuginfo-1.0.0-4.el8_1.x86_64.rpm
libwebp-tools-debuginfo-1.0.0-4.el8_1.i686.rpm
libwebp-tools-debuginfo-1.0.0-4.el8_1.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-2018-25011
https://access.redhat.com/security/cve/CVE-2020-36328
https://access.redhat.com/security/cve/CVE-2020-36329
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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