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redhatRedHatRHSA-2018:3327
HistoryOct 30, 2018 - 4:43 a.m.

(RHSA-2018:3327) Low: libmspack security update

2018-10-3004:43:45
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126

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.009

Percentile

83.1%

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.

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.009

Percentile

83.1%