freeradius: stack-based buffer overflow via long expiration date fields in client X509 certificates
Published Sep 18, 2012
6.8
MEDIUMCVSS 2.0
EPSS 5.70%
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.
Affected products
No data.
- 2.1.10
- 2.1.11
- 2.1.12
No data.
Red Hat Enterprise Linux 5
freeradius2-0:2.1.12-4.el5_8
Fixed · RHSA-2012:1327
Red Hat Enterprise Linux 6
freeradius-0:2.1.12-4.el6_3
Fixed · RHSA-2012:1326
Red Hat Enterprise Linux 5
freeradius
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | freeradius2-0:2.1.12-4.el5_8 | Fixed | RHSA-2012:1327 |
| Red Hat Enterprise Linux 6 | freeradius-0:2.1.12-4.el6_3 | Fixed | RHSA-2012:1326 |
| Red Hat Enterprise Linux 5 | freeradius | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.70% (0.05698) | 92.77th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.65% (0.05650) | 91.94th | v5 (v2026.06.15) |
| Jun 7, 2026 | 12.31% (0.12314) | 94.01th | v4 (v2025.03.14) |
| May 24, 2026 | 15.25% (0.15245) | 94.70th | v4 (v2025.03.14) |
| Feb 23, 2026 | 13.26% (0.13263) | 94.00th | v4 (v2025.03.14) |
| Dec 1, 2025 | 16.89% (0.16889) | 94.75th | v4 (v2025.03.14) |
| Sep 25, 2025 | 19.18% (0.19179) | 95.15th | v4 (v2025.03.14) |
| May 15, 2025 | 17.66% (0.17659) | 94.72th | v4 (v2025.03.14) |
| Mar 30, 2025 | 21.81% (0.21811) | 95.27th | v4 (v2025.03.14) |
| Mar 29, 2025 | 39.19% (0.39188) | 95.90th | v4 (v2025.03.14) |
| Mar 21, 2025 | 21.81% (0.21811) | 95.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 24.63% (0.24631) | 95.67th | v4 (v2025.03.14) |
| Dec 17, 2024 | 5.70% (0.05704) | 93.23th | v3 (v2023.03.01) |
| Dec 12, 2024 | 6.97% (0.06965) | 94.21th | v3 (v2023.03.01) |
| Apr 18, 2024 | 6.28% (0.06284) | 93.51th | v3 (v2023.03.01) |
| Feb 14, 2024 | 5.49% (0.05490) | 92.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.90% (0.04904) | 91.51th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.23% (0.08228) | 93.49th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.23% (0.08228) | 92.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.23% (0.08228) | 82.23th | v2 (v2022.01.01) |
References (24)
- http://archives.neohapsis.com/archives/bugtraq/2012-09/0043.html mailing-listx_refsource_BUGTRAQ
- http://freeradius.org/security.html x_refsource_CONFIRMVendor Advisory
- http://lists.apple.com/archives/security-announce/2013/Oct/msg00006.html vendor-advisoryx_refsource_APPLE
- http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090171.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00023.html vendor-advisoryx_refsource_SUSE
- http://osvdb.org/85325 vdb-entryx_refsource_OSVDB
- http://rhn.redhat.com/errata/RHSA-2012-1326.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2012-1327.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/50484 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/50584 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/50637 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/50770 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2012/dsa-2546 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:159 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2012/09/10/2 mailing-listx_refsource_MLIST
- http://www.pre-cert.de/advisories/PRE-SA-2012-06.txt x_refsource_MISC
- http://www.securityfocus.com/bid/55483 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1027509 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-1585-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-3547 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=852752 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/78408 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2012-3547
- https://www.cve.org/CVERecord?id=CVE-2012-3547
Change history (0)
No recorded changes yet.