Ipa: freeipa: unauthenticated dos in `/ipa/migration/migration.py` via unbounded request body read
Summary
| CVE | CVE-2026-73197 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-20 11:16:21 UTC |
| Updated | 2026-10-15 06:17:03 UTC |
| Description | A flaw was found in FreeIPA. A remote, unauthenticated attacker can exploit this vulnerability by sending oversized form POST requests to the `/ipa/migration/migration.py` endpoint. This can force the migration handler to read attacker-controlled request bodies fully into memory, leading to increased memory usage, slower request handling, and potential service disruption or denial of service. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.004290000 probability, percentile 0.355180000 (date 2026-10-14)
Problem Types: CWE-770 | CWE-770 Allocation of Resources Without Limits or Throttling
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Freeipa | Freeipa | All | All | All | All |
| Operating System | Redhat | Enterprise Linux | 10.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 6.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 7.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 8.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 9.0 | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Enterprise Linux 10 | unaffected 0:4.13.4-1.el10_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:4.12.2-15.el10_0.7 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 8100020261007071200.143e9e98 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 8100020261007070536.823393f5 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | unaffected 8080020261007080925.e581a9e4 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | unaffected 8080020261007071832.b0a6ceea * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions | unaffected 8080020261007080925.e581a9e4 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions | unaffected 8080020261007071832.b0a6ceea * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:4.13.4-1.el9_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions | unaffected 0:4.10.1-12.el9_2.7 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions | unaffected 0:4.11.0-15.el9_4.9 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:4.12.2-14.el9_6.8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 6 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:82935 | [email protected] | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | Issue Tracking, Vendor Advisory |
| access.redhat.com/errata/RHSA-2026:83083 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:70564 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:83461 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:83084 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:83085 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:83460 | [email protected] | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-73197 | [email protected] | access.redhat.com | Vendor Advisory |
| access.redhat.com/errata/RHSA-2026:72279 | [email protected] | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Red Hat would like to thank AISLE Research for reporting this issue. (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-05-11T20:27:44.000Z | Reported to Red Hat. |
| CNA | 2026-08-20T10:05:49.171Z | Made public. |
Workarounds
CNA: If the `/ipa/migration` endpoint is not required, it can be disabled by commenting out or removing the `Alias /ipa/migration` and its corresponding `<Directory>` block in the Apache configuration file (e.g., `/etc/httpd/conf.d/ipa.conf`). Alternatively, to limit the size of request bodies processed by the `/ipa/migration` endpoint, add the `LimitRequestBody` directive within the `<Directory "/usr/share/ipa/migration">` block in your Apache configuration, setting a conservative limit such as 1 MiB (1048576 bytes): ```apache <Directory "/usr/share/ipa/migration"> LimitRequestBody 1048576 # ... other directives ... </Directory> ``` After modifying the Apache configuration, the `httpd` service must be reloaded or restarted for the changes to take effect. This may temporarily interrupt service.