Description
Cistron RADIUS daemon (radiusd-cistron) 1.6.6 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large value in an NAS-Port attribute, which is interpreted as a negative number and causes a buffer overflow.
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 3.0 | radiusd-cistron | 1.6.6-1woody1 | DSA-321 |
Advisories 1
- DSA-321 radiusd-cistron - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026
References
- TLSA-2003-40 vendor-advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=196063
- CLA-2003:664 vendor-advisory
- DSA-321 vendor-advisory
- SuSE-SA:2003:030 vendor-advisory