Description
The (1) sss_autofs_cmd_getautomntent and (2) sss_autofs_cmd_getautomntbyname function in responder/autofs/autofssrv_cmd.c and the (3) ssh_cmd_parse_request function in responder/ssh/sshsrv_cmd.c in System Security Services Daemon (SSSD) before 1.9.4 allow remote attackers to cause a denial of service (out-of-bounds read, crash, and restart) via a crafted SSSD packet.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | sssd | 1.8.4-2 | — |
| Debian 13 | sssd | 1.8.4-2 | — |
| Debian 12 | sssd | 1.8.4-2 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | sssd +10 | 1.9.2-82.el6 | RHSA-2013:0508 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | sssd | 1.14.2-3.1 | openSUSE-SU-2024:10427-1 |
Advisories 2
- RHSA-2013:0508 Red Hat Security Advisory: sssd security, bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- openSUSE-SU-2024:10427-1 libipa_hbac-devel-1.14.2-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://fedorahosted.org/sssd/ticket/1781
- https://fedorahosted.org/sssd/wiki/Releases/Notes-1.9.4
- 51928 third-party-advisory
- http://git.fedorahosted.org/cgit/sssd.git/commit/?id=30e2585dd46b62aa3a4abdf6de3f40a20e1743ab
- FEDORA-2013-1795 vendor-advisory
- RHSA-2013:0508 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=884601
- http://git.fedorahosted.org/cgit/sssd.git/commit/?id=2bd514cfde1938b1e245af11c9b548d58d49b325
- 52315 third-party-advisory
- 57539 vdb-entry
- FEDORA-2013-1826 vendor-advisory