Sigurnosni nedostaci programske biblioteke libmspack

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by - 30. listopada 2018.0

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Red Hat Security Advisory

Synopsis: Low: libmspack security update
Advisory ID: RHSA-2018:3327-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:3327
Issue date: 2018-10-30
CVE Names: CVE-2018-14679 CVE-2018-14680 CVE-2018-14681
CVE-2018-14682
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1. Summary:

An update for libmspack is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Low. 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 Client (v. 7) – x86_64
Red Hat Enterprise Linux Client Optional (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – x86_64
Red Hat Enterprise Linux Server Optional (v. 7) – ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) – x86_64
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) – aarch64, ppc64le

3. Description:

The libmspack packages contain a library providing compression and
extraction of the Cabinet (CAB) file format used by Microsoft.

Security Fix(es):

* libmspack: off-by-one error in the CHM PMGI/PMGL chunk number validity
checks (CVE-2018-14679)

* libmspack: off-by-one error in the CHM chunk number validity checks
(CVE-2018-14680)

* libmspack: out-of-bounds write in kwajd_read_headers in mspack/kwajd.c
(CVE-2018-14681)

* libmspack: off-by-one error in the TOLOWER() macro for CHM decompression
(CVE-2018-14682)

For more details about the security issue(s), including the impact, a CVSS
score, 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 7.6 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/):

1610890 – CVE-2018-14679 libmspack: off-by-one error in the CHM PMGI/PMGL chunk number validity checks
1610896 – CVE-2018-14681 libmspack: out-of-bounds write in kwajd_read_headers in mspack/kwajd.c
1610934 – CVE-2018-14680 libmspack: off-by-one error in the CHM chunk number validity checks
1610941 – CVE-2018-14682 libmspack: off-by-one error in the TOLOWER() macro for CHM decompression

6. Package List:

Red Hat Enterprise Linux Client (v. 7):