The chmd_read_headers function in chmd.c in libmspack before 0.5 does not validate name lengths, which allows remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted CHM file
Published Jun 11, 2015
4.3
MEDIUMCVSS 2.0
EPSS 1.43%
Description
The chmd_read_headers function in chmd.c in libmspack before 0.5 does not validate name lengths, which allows remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted CHM file.
Affected products
No data.
- ≤ 0.4-3
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.43% (0.01428) | 72.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.46% (0.01456) | 69.99th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.48% (0.00480) | 63.01th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.12% (0.02119) | 89.62th | v3 (v2023.03.01) |
| Aug 25, 2024 | 2.12% (0.02119) | 89.41th | v3 (v2023.03.01) |
| Apr 10, 2024 | 1.07% (0.01066) | 83.93th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.07% (0.01066) | 81.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (4)
- http://anonscm.debian.org/cgit/collab-maint/libmspack.git/diff/debian/patches/fix-name-field-boundaries.patch?id=a25bb144795e526748b57884daf365732c7e2295 x_refsource_CONFIRM
- http://openwall.com/lists/oss-security/2015/02/03/11 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/72486 vdb-entryx_refsource_BID
- https://bugs.debian.org/774726 x_refsource_CONFIRMExploit
| Link | Providers | Tags |
|---|---|---|
| http://anonscm.debian.org/cgit/collab-maint/libmspack.git/diff/debian/patches/fix-name-field-boundaries.patch?id=a25bb144795e526748b57884daf365732c7e2295 | x_refsource_CONFIRM | |
| http://openwall.com/lists/oss-security/2015/02/03/11 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/72486 | vdb-entryx_refsource_BID | |
| https://bugs.debian.org/774726 | x_refsource_CONFIRMExploit |
Change history (0)
No recorded changes yet.