CVE-2011-4966 Auth bypass in n/a
Medium 6.0
Published
Updated
Check this codebase for CVE-2011-4966 and fix it if it is affected.
What it is: CVE-2011-4966 is a medium-severity authentication bypass vulnerability in n/a, published on 12 Mar 2013. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2011-4966 in the wild and no public exploit code.
Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2011-4966/ (Markdown: https://insights.sbomify.com/CVE-2011-4966/index.md)
Remote authenticated users can bypass password expiration checks in FreeRADIUS unix mode, allowing access with expired credentials.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-4966?
CVE-2011-4966 is a medium-severity authentication bypass vulnerability in n/a, published on 12 Mar 2013. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-255
Which versions are affected by CVE-2011-4966?
It affects 1 product.
Linux distribution packages (40)
freeradius2 Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-debuginfo Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-krb5 Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-ldap Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-mysql Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-perl Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-postgresql Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-python Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-unixODBC Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2-utils Red Hat:enterprise_linux:5::client_workstation | All versions | 0:2.1.12-5.el5 |
freeradius2 Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-krb5 Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-ldap Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-mysql Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-perl Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-postgresql Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-python Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-unixODBC Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius2-utils Red Hat:enterprise_linux:5::server | All versions | 0:2.1.12-5.el5 |
freeradius Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-krb5 Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-ldap Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-mysql Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-perl Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-postgresql Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-python Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-unixODBC Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius-utils Red Hat:enterprise_linux:6::server | All versions | 0:2.1.12-3.el6 |
freeradius Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-krb5 Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-ldap Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-mysql Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-perl Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-postgresql Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-python Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-unixODBC Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
freeradius-utils Red Hat:enterprise_linux:6::workstation | All versions | 0:2.1.12-3.el6 |
Products include Freeradius Freeradius.
How do I fix CVE-2011-4966?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2011-4966 being exploited?
There is no known exploitation of CVE-2011-4966 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as AZL-7231, DEBIAN-CVE-2011-4966, GHSA-3gjj-f2w8-w88q, RHBA-2012:0881, RHSA-2013:0134.