libmspack: off-by-one error in the TOLOWER() macro for CHM decompression
Published Jul 28, 2018
8.8
HIGHCVSS 3.0
EPSS 3.81%
Description
An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the TOLOWER() macro for CHM decompression.
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
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:H/I:H/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:P/I:P/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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.81% (0.03806) | 89.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.81% (0.03806) | 88.61th | v5 (v2026.06.15) |
| Feb 27, 2026 | 4.43% (0.04428) | 88.82th | v4 (v2025.03.14) |
| Dec 1, 2025 | 3.30% (0.03303) | 86.86th | v4 (v2025.03.14) |
| Aug 30, 2025 | 1.77% (0.01775) | 81.93th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.09% (0.04087) | 87.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.58% (0.06575) | 84.84th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.09% (0.04087) | 87.81th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.58% (0.00584) | 78.87th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.58% (0.00584) | 77.53th | v3 (v2023.03.01) |
| Jan 28, 2024 | 0.74% (0.00744) | 78.93th | v3 (v2023.03.01) |
| Dec 19, 2023 | 0.77% (0.00770) | 79.24th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.74% (0.00743) | 78.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.58% (0.00576) | 74.63th | 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 | 2.88% (0.02880) | 63.65th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.88% (0.02880) | 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-2018-14682 Vendor Advisory
- https://bugs.debian.org/904800 x_refsource_MISCIssue TrackingMailing ListPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1610941 Issue Tracking
- https://github.com/kyz/libmspack/commit/4fd9ccaa54e1aebde1e4b95fb0163b699fd7bcc8 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-2018-14682
- 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-2018-14682
- https://www.debian.org/security/2018/dsa-4260 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.