libmspack: off-by-one error in the CHM PMGI/PMGL chunk number validity checks
Published Jul 28, 2018
6.5
MEDIUMCVSS 3.0
EPSS 3.31%
Description
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).
Affected products
No data.
Configuration 1
- 0.0.20060920
- 0.3
- 0.4
- 0.5
- 0.6
- ≤ 1.5
Configuration 2
- 12.04
- 14.04
- 16.04
- 18.04
- 8.0
- 9.0
Configuration 3
- 3.3
- 7.0
- 7.0
- 7.0
Configuration 4
- 12.04
No data.
Red Hat Enterprise Linux 7
libmspack-0:0.5-0.6.alpha.el7
Fixed · RHSA-2018:3327
Red Hat Enterprise Linux 8
libmspack
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | libmspack-0:0.5-0.6.alpha.el7 | Fixed | RHSA-2018:3327 |
| Red Hat Enterprise Linux 8 | libmspack | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of libmspack as shipped with Red Hat Enterprise Linux 7.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:M/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.31% (0.03312) | 88.16th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.31% (0.03312) | 86.93th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.07% (0.01075) | 77.13th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.09% (0.02090) | 82.63th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.04% (0.01045) | 75.96th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.93% (0.00933) | 83.70th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.93% (0.00933) | 82.53th | v3 (v2023.03.01) |
| Dec 19, 2023 | 1.19% (0.01186) | 83.49th | v3 (v2023.03.01) |
| Sep 3, 2023 | 1.39% (0.01393) | 84.73th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.08% (0.01082) | 82.05th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.56% (0.03565) | 68.38th | v5 (v2026.06.15) |
| Apr 14, 2021 | 3.56% (0.03565) | 0.00th | v1 |
References (17)
- http://www.openwall.com/lists/oss-security/2018/07/26/1 x_refsource_MISCMailing ListThird Party Advisory
- http://www.securitytracker.com/id/1041410 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:3327 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3505 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-14679 Vendor Advisory
- https://bugs.debian.org/904802 x_refsource_MISCIssue TrackingMailing ListPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1610890 Issue Tracking
- https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00007.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-14679
- https://security.gentoo.org/glsa/201903-20 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/3728-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3728-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3728-3/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3789-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-14679
- https://www.debian.org/security/2018/dsa-4260 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.