Description
The get_user_grouplist function in the extdom plug-in in FreeIPA before 4.1.4 does not properly reallocate memory when processing user accounts, which allows remote attackers to cause a denial of service (crash) via a group list request for a user that belongs to a large number of groups.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ipa +2 | 4.1.0-18.ael7b_1.3 | RHSA-2015:0728 |
| RHEL 7 | ipa-server +2 | 4.1.0-18.el7_1.3 | RHSA-2015:0728 |
| RHEL 7 | slapi-nis | 0.54-3.ael7b_1 | RHSA-2015:0728 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ipa-client +4 | 4.1.0-18.0.1.el7_1.3 | ELSA-2015-0728 |
| Oracle Linux 7 | slapi-nis | 0.54-3.el7_1 | ELSA-2015-0728 |
Advisories 2
- RHSA-2015:0728 Red Hat Security Advisory: ipa and slapi-nis security and bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- ELSA-2015-0728 Moderate: ipa and slapi-nis security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 26, 2015
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1205200
- FEDORA-2015-4747 vendor-advisory
- https://fedorahosted.org/freeipa/ticket/4908
- 73376 vdb-entry
- FEDORA-2015-4788 vendor-advisory
- RHSA-2015:0728 vendor-advisory