freeradius: does not respect expired passwords when using the unix module
Published Mar 12, 2013
6.0
MEDIUMCVSS 2.0
EPSS 1.38%
Description
modules/rlm_unix/rlm_unix.c in FreeRADIUS before 2.2.0, when unix mode is enabled for user authentication, does not properly check the password expiration in /etc/shadow, which allows remote authenticated users to authenticate using an expired password.
Affected products
No data.
- n/a
- ≤ 2.2.0
- 0.1
- 0.2
- 0.3
- 0.4
- 0.5
- 0.6
- 0.7
- 0.7.1
- 0.8
- 0.8.1
- 0.9
- 0.9.0
- 0.9.1
- 0.9.2
- 0.9.3
- 1.0.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.1.0
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.5
- 1.1.6
- 1.1.7
- 1.1.8
- 2.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.6
- 2.1.7
- 2.1.8
- 2.1.9
- 2.1.10
- 2.1.11
- 2.1.12
No data.
Red Hat Enterprise Linux 5
freeradius2-0:2.1.12-5.el5
Fixed · RHSA-2013:0134
Red Hat Enterprise Linux 6
freeradius-0:2.1.12-3.el6
Fixed · RHBA-2012:0881
Red Hat Enterprise Linux 5
freeradius
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | freeradius2-0:2.1.12-5.el5 | Fixed | RHSA-2013:0134 |
| Red Hat Enterprise Linux 6 | freeradius-0:2.1.12-3.el6 | Fixed | RHBA-2012:0881 |
| Red Hat Enterprise Linux 5 | freeradius | Will not fix | 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:S/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.38% (0.01382) | 71.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.39% (0.01393) | 68.73th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.38% (0.00383) | 57.50th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00326) | 71.69th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00326) | 70.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00326) | 66.15th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.13% (0.01132) | 56.11th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.13% (0.01132) | 55.54th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.65% (0.01649) | 75.40th | v2 (v2022.01.01) |
| Sep 22, 2022 | 1.13% (0.01132) | 54.59th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.13% (0.01132) | 52.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.13% (0.01132) | 30.65th | v2 (v2022.01.01) |
References (9)
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00029.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00079.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHBA-2012-0881.html x_refsource_MISC
- http://rhn.redhat.com/errata/RHSA-2013-0134.html vendor-advisoryx_refsource_REDHATPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2011-4966 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=879045 Issue Tracking
- https://github.com/alandekok/freeradius-server/commit/1b1ec5ce75e224bd1755650c18ccdaa6dc53e605 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2011-4966
- https://www.cve.org/CVERecord?id=CVE-2011-4966
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2013-01/msg00029.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-updates/2013-01/msg00079.html | vendor-advisoryx_refsource_SUSE | |
| http://rhn.redhat.com/errata/RHBA-2012-0881.html | x_refsource_MISC | |
| http://rhn.redhat.com/errata/RHSA-2013-0134.html | vendor-advisoryx_refsource_REDHATPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2011-4966 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=879045 | Issue Tracking | |
| https://github.com/alandekok/freeradius-server/commit/1b1ec5ce75e224bd1755650c18ccdaa6dc53e605 | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-4966 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-4966 |
Change history (0)
No recorded changes yet.