4.3 - RHSA-2019:2049

Problem Description:

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 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 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

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: Out-of-bounds write in mspack/cab.h (CVE-2018-18584)

* libmspack: chmd_read_headers() fails to reject filenames containing NULL bytes (CVE-2018-18585)

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 7.7 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/):

1644214 - CVE-2018-18584 libmspack: Out-of-bounds write in mspack/cab.h 1644215 - CVE-2018-18585 libmspack: chmd_read_headers() fails to reject filenames containing NULL bytes