CVE-2012-3547

medium
Published 2012-09-18 · Modified 2026-04-29
CVSS v3
CVSS v2
6.8
VIR risk
6.8

Description

Stack-based buffer overflow in the cbtls_verify function in FreeRADIUS 2.1.10 through 2.1.12, when using TLS-based EAP methods, allows remote attackers to cause a denial of service (server crash) and possibly execute arbitrary code via a long "not after" timestamp in a client certificate.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-3547

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://secunia.com/advisories/50584

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://secunia.com/advisories/50484

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://freeradius.org/security.html

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed2.1.12+dfsg-1.1
debian debianbullseyefixed2.1.12+dfsg-1.1
debian debianforkyfixed2.1.12+dfsg-1.1
debian debiansidfixed2.1.12+dfsg-1.1
debian debiantrixiefixed2.1.12+dfsg-1.1

Application impact

VendorProductVersionsFixed
freeradiusfreeradius2.1.10
freeradiusfreeradius2.1.11
freeradiusfreeradius2.1.12

References

CWEs

CWE-119

Verify integrity in audit chain (admin only). AS-IS.