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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | hylafax | 3:6.0.6-8.1 | — |
| Debian 13 | hylafax | 3:6.0.6-8.1 | — |
| Debian 12 | hylafax | 3:6.0.6-8.1 | — |
| Debian 9 | hylafax | 3:6.0.6-7+deb9u1 | DSA-4298-1 |
| Debian 8 | hylafax | 3:6.0.6-6+deb8u1 | DLA-1515-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | hylafax | 3:6.0.6-8.1~ubuntu0.18.04.1 | — |
| Ubuntu 16.04 LTS | hylafax | 3:6.0.6-6+deb8u1build0.16.04.1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | hylafax+ | 7.0.3-5.1 | openSUSE-SU-2024:10852-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.20 | hylafax | 6.0.6-r5 | — |
| Alpine v3.19 | hylafax | 6.0.6-r5 | — |
| Alpine v3.18 | hylafax | 6.0.6-r5 | — |
| Alpine v3.17 | hylafax | 6.0.6-r5 | — |
| Alpine v3.16 | hylafax | 6.0.6-r5 | — |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | hylafax | 6.0.6-r5 | — |
| Alpine v3.14 | hylafax | 6.0.6-r5 | — |
| Alpine v3.13 | hylafax | 6.0.6-r5 | — |
| Alpine v3.12 | hylafax | 6.0.6-r5 | — |
| Alpine v3.11 | hylafax | 6.0.6-r5 | — |
| Alpine v3.10 | hylafax | 6.0.6-r5 | — |
| Alpine v3.9 | hylafax | 6.0.6-r5 | — |
| Alpine v3.8 | hylafax | 6.0.6-r5 | — |
| Alpine v3.7 | hylafax | 6.0.6-r4 | — |
| Alpine v3.6 | hylafax | 6.0.6-r5 | — |
| Alpine v3.5 | hylafax | 6.0.6-r4 | — |
Advisories 3
- DSA-4298-1 hylafax - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1515-1 hylafax - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10852-1 hylafax+-7.0.3-5.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [debian-lts-announce] 20180922 [SECURITY] [DLA 1515-1] hylafax security update mailing-list
- 20180919 X41 D-Sec GmbH Security Advisory X41-2018-008: Multiple Vulnerabilities in HylaFAX mailing-list
- http://git.hylafax.org/HylaFAX?a=commit%3Bh=c6cac8d8cd0dbe313689ba77023e12bc5b3027be
- https://www.x41-dsec.de/lab/advisories/x41-2018-008-hylafax/
- DSA-4298 vendor-advisory
- [oss-security] 20180920 X41 D-Sec GmbH Security Advisory X41-2018-008: Multiple Vulnerabilities in HylaFAX mailing-list