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CVE-2019-1010305

20
FAUCET Score

CVE-2019-1010305 is a buffer overflow vulnerability in libmspack 0.9.1alpha, specifically within the chmd_read_headers() function, affecting products from Canonical, Debian, Fedora Project, and Kyzer. This medium-severity vulnerability (CVSS 5.5) requires user interaction, as the victim must open a specially crafted CHM file, leading to potential information disclosure. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
0.9.1CPE matchmatch criteria
cpe:2.3:a:kyzer:libmspack:0.9.1:alpha:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
72.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 82nd percentile among its peer group of 5,758 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libmspack-0:0.5-0.8.alpha.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libmspack-0:0.7-0.3.alpha.el8.4
View patch

Vendor Advisories (1)

redhatCVE-2019-1010305Low

libmspack: buffer overflow in function chmd_read_headers()

Jul 15, 2019

References

github.com / kyz/libmspack/commit/2f084136cfe0d05e5bf5703f3e83c6d955234b4d
PatchThird Party Advisory
github.com / kyz/libmspack/issues/27
ExploitIssue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2019/08/msg00028.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/10/msg00033.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/IXWNEY4CJBLPRKV6LG7FQUPD6WVZYBTB
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/S2QJTUAGP22YY7453MHGTFN4YQE5HJBR
usn.ubuntu.com / 4066-1
Third Party Advisory
usn.ubuntu.com / 4066-2
Third Party Advisory