Bug 2262169 (CVE-2024-1481)
| Summary: | CVE-2024-1481 freeipa: specially crafted HTTP requests potentially lead to denial of service | ||
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| Product: | [Other] Security Response | Reporter: | Robb Gatica <rgatica> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | abokovoy, frenaud, ftrivino, jrische, saroy, security-response-team, trathi |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | freeipa-4.11.1 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in FreeIPA. This issue may allow a remote attacker to craft a HTTP request with parameters that can be interpreted as command arguments to kinit on the FreeIPA server, which can lead to a denial of service.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2265129 | ||
| Bug Blocks: | 2262165, 2271727 | ||
Created freeipa tracking bugs for this issue: Affects: fedora-all [bug 2265129] *** Bug 2271726 has been marked as a duplicate of this bug. *** This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2024:2147 https://access.redhat.com/errata/RHSA-2024:2147 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:3044 https://access.redhat.com/errata/RHSA-2024:3044 |
Summary: Specially crafted HTTP requests can read files in the DC server. And use keytab files for authorization for different kerberos principals. Tested FreeIPA version: ipa-server-4.10.1 Details The "user" parameter in the HTTP URI "/sip/session/login_password" is inserted into the "run" function from the file "ipautil.py". Then it is passed as an argument to the "subprocess.Popen". As a result, the following list is passed: "args=['/usr/bin/kinit', '{user params}', '-c', /run/ipa/ccaches/kinit_13704', '-T', '/run/ipa/ccaches/armor_13704', '-C', '-E']". If instead of "{user params}" there is a string "-V", then it will be taken as an argument for "kinit". As a result, remote attackers can use options such as "-t", "-X", "-S" or "-I" for DOS, or use the keytab file from the system to log in under participants without a password. PoC (attached screenshots): Simple request with "user=-H&password=0000000" With multiple parameters "user=-Vkt&password=0000000" Impact Possible DOS, use keytab from system and read files on DC.