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Fencer Vulns
critical 9.8

CVE-2018-17141 json

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 J…

published 2018-09-21 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-8919

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.6%
EPSS 5.6% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Patch / fix

  • hylafax Debian 14, Debian 13, Debian 12 3:6.0.6-8.1

debian advisories DEBIAN-CVE-2018-17141

  • hylafax Ubuntu 16.04 LTS 3:6.0.6-6+deb8u1build0.16.04.1
  • hylafax Ubuntu 18.04 LTS 3:6.0.6-8.1~ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2018-17141

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • hylafax+ openSUSE Tumbleweed 7.0.3-5.1

opensuse advisories openSUSE-SU-2024:10852-1

  • hylafax Alpine 3.20, Alpine 3.19, Alpine 3.18 +11 more 6.0.6-r5
  • hylafax Alpine 3.7, Alpine 3.5 6.0.6-r4

alpine advisories ALPINE-CVE-2018-17141

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Exploit prediction

5.59% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • seclists.org https://seclists.org/bugtraq/2018/Sep/49 referenced PoC, tagged "exploit" by a source, unverified
  • x41-dsec.de https://www.x41-dsec.de/lab/advisories/x41-2018-008-hylafax/ referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2018/09/20/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.