Sigurnosni nedostaci programske biblioteke libexif

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

Synopsis: Moderate: libexif security, bug fix, and enhancement update
Advisory ID: RHSA-2020:4766-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4766
Issue date: 2020-11-03
CVE Names: CVE-2019-9278 CVE-2020-0093 CVE-2020-0181
CVE-2020-0182 CVE-2020-0198 CVE-2020-12767
CVE-2020-13113 CVE-2020-13114
=====================================================================

1. Summary:

An update for libexif 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 CodeReady Linux Builder (v. 8) – aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux AppStream (v. 8) – aarch64, ppc64le, s390x, x86_64

3. Description:

The libexif packages provide a library for extracting extra information
from image files.

The following packages have been upgraded to a later upstream version:
libexif (0.6.22). (BZ#1841320)

Security Fix(es):

* libexif: out of bounds write in exif-data.c (CVE-2019-9278)

* libexif: out of bounds read due to a missing bounds check in
exif_data_save_data_entry function in exif-data.c (CVE-2020-0093)

* libexif: integer overflow in exif_data_load_data_thumbnail function in
exif-data.c (CVE-2020-0181)

* libexif: integer overflow in exif_data_load_data_content function in
exif-data.c (CVE-2020-0198)

* libexif: use of uninitialized memory in EXIF Makernote handling can lead
to crashes and use-after-free (CVE-2020-13113)

* libexif: unrestricted size in handling Canon EXIF MakerNote data can lead
to consumption of large amounts of compute time (CVE-2020-13114)

* libexif: out of bounds read due to a missing bounds check in
exif_entry_get_value function in exif-entry.c (CVE-2020-0182)

* libexif: divide-by-zero in exif_entry_get_value function in exif-entry.c
(CVE-2020-12767)

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/):

1789031 – CVE-2019-9278 libexif: out of bounds write in exif-data.c
1834950 – CVE-2020-12767 libexif: divide-by-zero in exif_entry_get_value function in exif-entry.c
1840347 – CVE-2020-13113 libexif: use of uninitialized memory in EXIF Makernote handling can lead to crashes and use-after-free
1840350 – CVE-2020-13114 libexif: unrestricted size in handling Canon EXIF MakerNote data can lead to consumption of large amounts of compute time
1841320 – Rebase to libexif 0.6.22
1847131 – CVE-2020-0181 libexif: integer overflow in exif_data_load_data_thumbnail function in exif-data.c
1847133 – CVE-2020-0198 libexif: integer overflow in exif_data_load_data_content function in exif-data.c
1852487 – CVE-2020-0093 libexif: out of bounds read due to a missing bounds check in exif_data_save_data_entry function in exif-data.c
1852490 – CVE-2020-0182 libexif: out of bounds read due to a missing bounds check in exif_entry_get_value function in exif-entry.c

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
libexif-0.6.22-4.el8.src.rpm

aarch64:
libexif-0.6.22-4.el8.aarch64.rpm
libexif-debuginfo-0.6.22-4.el8.aarch64.rpm
libexif-debugsource-0.6.22-4.el8.aarch64.rpm

ppc64le:
libexif-0.6.22-4.el8.ppc64le.rpm
libexif-debuginfo-0.6.22-4.el8.ppc64le.rpm
libexif-debugsource-0.6.22-4.el8.ppc64le.rpm

s390x:
libexif-0.6.22-4.el8.s390x.rpm
libexif-debuginfo-0.6.22-4.el8.s390x.rpm
libexif-debugsource-0.6.22-4.el8.s390x.rpm

x86_64:
libexif-0.6.22-4.el8.i686.rpm
libexif-0.6.22-4.el8.x86_64.rpm
libexif-debuginfo-0.6.22-4.el8.i686.rpm
libexif-debuginfo-0.6.22-4.el8.x86_64.rpm
libexif-debugsource-0.6.22-4.el8.i686.rpm
libexif-debugsource-0.6.22-4.el8.x86_64.rpm

Red Hat CodeReady Linux Builder (v. 8):

aarch64:
libexif-debuginfo-0.6.22-4.el8.aarch64.rpm
libexif-debugsource-0.6.22-4.el8.aarch64.rpm
libexif-devel-0.6.22-4.el8.aarch64.rpm

ppc64le:
libexif-debuginfo-0.6.22-4.el8.ppc64le.rpm
libexif-debugsource-0.6.22-4.el8.ppc64le.rpm
libexif-devel-0.6.22-4.el8.ppc64le.rpm

s390x:
libexif-debuginfo-0.6.22-4.el8.s390x.rpm
libexif-debugsource-0.6.22-4.el8.s390x.rpm
libexif-devel-0.6.22-4.el8.s390x.rpm

x86_64:
libexif-debuginfo-0.6.22-4.el8.i686.rpm
libexif-debuginfo-0.6.22-4.el8.x86_64.rpm
libexif-debugsource-0.6.22-4.el8.i686.rpm
libexif-debugsource-0.6.22-4.el8.x86_64.rpm
libexif-devel-0.6.22-4.el8.i686.rpm
libexif-devel-0.6.22-4.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-2019-9278
https://access.redhat.com/security/cve/CVE-2020-0093
https://access.redhat.com/security/cve/CVE-2020-0181
https://access.redhat.com/security/cve/CVE-2020-0182
https://access.redhat.com/security/cve/CVE-2020-0198
https://access.redhat.com/security/cve/CVE-2020-12767
https://access.redhat.com/security/cve/CVE-2020-13113
https://access.redhat.com/security/cve/CVE-2020-13114
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@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

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