Description
Buffer overflow in the RFC1413 (ident) client in cfingerd 1.4.3-3 allows remote IDENT servers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted response.
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 | cfingerd | 1.4.3-3.1 | — |
| Debian 13 | cfingerd | 1.4.3-3.1 | — |
| Debian 12 | cfingerd | 1.4.3-3.1 | — |
| Debian 6.0 | cfingerd | 1.4.3-3+squeeze1 | DSA-2635-1 |
Advisories 1
- DSA-2635-1 cfingerd - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026