Bug 1610890 (CVE-2018-14679) - CVE-2018-14679 libmspack: off-by-one error in the CHM PMGI/PMGL chunk number validity checks
Summary: CVE-2018-14679 libmspack: off-by-one error in the CHM PMGI/PMGL chunk number ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-14679
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1610891 1610893 1610932 1611550
Blocks: 1610945
TreeView+ depends on / blocked
 
Reported: 2018-08-01 14:46 UTC by Laura Pardo
Modified: 2021-12-10 16:50 UTC (History)
5 users (show)

Fixed In Version: libmspack 0.7alpha
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Clone Of:
Environment:
Last Closed: 2019-06-10 10:34:48 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3327 0 None None None 2018-10-30 07:59:43 UTC

Description Laura Pardo 2018-08-01 14:46:29 UTC 
An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the CHM PMGI/PMGL chunk number validity checks, which could lead to denial of service (uninitialized data dereference and application crash)


References:
http://openwall.com/lists/oss-security/2018/07/28/1
https://bugs.debian.org/904802

Upstream patch:
https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a
Comment 1 Laura Pardo 2018-08-01 14:46:53 UTC 
Created libmspack tracking bugs for this issue:

Affects: fedora-all [bug 1610891]
Comment 4 Laura Pardo 2018-08-01 16:25:49 UTC 
Created libmspack tracking bugs for this issue:

Affects: epel-all [bug 1610932]
Comment 6 Stefan Cornelius 2018-08-02 10:38:53 UTC 
Statement:

This issue affects the versions of libmspack as shipped with Red Hat Enterprise Linux 7.
Comment 8 errata-xmlrpc 2018-10-30 07:59:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3327 https://access.redhat.com/errata/RHSA-2018:3327
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