CVE-2018-17141 — HylaFAX 6
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.
Published
2018-09-21T17:00:00.000Z
Last modified
2024-08-05T10:39:59.554Z
01What is this vulnerability?
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.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2018-09-21T17:00:00.000Z
- Last modified: 2024-08-05T10:39:59.554Z
09References
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/09/msg00026.html
- seclists.org — https://seclists.org/bugtraq/2018/Sep/49
- git.hylafax.org — http://git.hylafax.org/HylaFAX?a=commit%3Bh=c6cac8d8cd0dbe313689ba77023e12bc5b30…
- www.x41-dsec.de — https://www.x41-dsec.de/lab/advisories/x41-2018-008-hylafax/
- www.debian.org — https://www.debian.org/security/2018/dsa-4298
- www.openwall.com — http://www.openwall.com/lists/oss-security/2018/09/20/1
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