Description
Format string vulnerability in Hylafax on FreeBSD allows local users to execute arbitrary code via format specifiers in the -h hostname argument for (1) faxrm or (2) faxalter.
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 | 4.1.2-2.1 | — |
| Debian 13 | hylafax | 4.1.2-2.1 | — |
| Debian 12 | hylafax | 4.1.2-2.1 | — |
| Debian 3.0 | hylafax | 1:4.1.1-1.1 | DSA-148 |
Advisories 1
- DSA-148 hylafax - buffer overflows and format string vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- hylafax-hostname-format-string(7164) vdb-entry
- 20010923 hylafax mailing-list
- 3357 vdb-entry