Test ID:	1.3.6.1.4.1.25623.1.1.1.2.2023.3436
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-3436-1)
Summary:	The remote host is missing an update for the Debian 'sssd' package(s) announced via the DLA-3436-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'sssd' package(s) announced via the DLA-3436-1 advisory. Vulnerability Insight: Multiple vulnerabilities were found in sssd, a set of daemons to manage access to remote directories and authentication mechanisms, which could lead to privilege escalation. CVE-2018-16838 It was discovered that when the Group Policy Objects (GPO) are not readable by SSSD due to a too strict permission settings on the server side, SSSD allows all authenticated users to login instead of denying access. A new boolean setting ad_gpo_ignore_unreadable (defaulting to False) is introduced for environments where attributes in the groupPolicyContainer are not readable and changing the permissions on the GPO objects is not possible or desirable. See sssd-ad(5). CVE-2019-3811 It was discovered that if a user was configured with no home directory set, then sssd(8) returns / (i.e., the root directory) instead of the empty string (meaning no home directory). This could impact services that restrict the user's filesystem access to within their home directory through chroot() or similar. CVE-2021-3621 It was discovered that the sssctl(8) command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw could allows an attacker to trick the root user into running a specially crafted sssctl(8) command, such as via sudo, in order to gain root privileges. CVE-2022-4254 It was discovered that libsss_certmap failed to sanitize certificate data used in LDAP filters. PKINIT enables a client to authenticate to the KDC using an X.509 certificate and the corresponding private key, rather than a passphrase or keytab. Mapping rules are used in order to map the certificate presented during a PKINIT authentication request to the corresponding principal. However the mapping filter was found to be vulnerable to LDAP filter injection. As the search result is be influenced by values in the certificate, which may be attacker controlled, this flaw could allow an attacker to gain control of the admin account, leading to full domain takeover. For Debian 10 buster, these problems have been fixed in version 1.16.3-3.2+deb10u1. We recommend that you upgrade your sssd packages. For the detailed security status of sssd please refer to its security tracker page at: [link moved to references] Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references] Affected Software/OS: 'sssd' package(s) on Debian 10. Solution: Please install the updated package(s). CVSS Score: 9.3 CVSS Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2018-16838 RHSA-2019:2177 https://access.redhat.com/errata/RHSA-2019:2177 RHSA-2019:2437 https://access.redhat.com/errata/RHSA-2019:2437 RHSA-2019:3651 https://access.redhat.com/errata/RHSA-2019:3651 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16838 openSUSE-SU-2019:1576 http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00042.html openSUSE-SU-2019:1589 http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00051.html https://lists.debian.org/debian-lts-announce/2023/05/msg00028.html Common Vulnerability Exposure (CVE) ID: CVE-2019-3811 106644 http://www.securityfocus.com/bid/106644 [debian-lts-announce] 20190117 [SECURITY] [DLA 1635-1] sssd security update https://lists.debian.org/debian-lts-announce/2019/01/msg00011.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3811 openSUSE-SU-2019:0344 http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00026.html openSUSE-SU-2019:1174 http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00045.html Common Vulnerability Exposure (CVE) ID: CVE-2021-3621 https://bugzilla.redhat.com/show_bug.cgi?id=1975142 https://sssd.io/release-notes/sssd-2.6.0.html Common Vulnerability Exposure (CVE) ID: CVE-2022-4254 https://access.redhat.com/security/cve/CVE-2022-4254 https://bugzilla.redhat.com/show_bug.cgi?id=2149894 https://github.com/SSSD/sssd/commit/a2b9a84460429181f2a4fa7e2bb5ab49fd561274 https://github.com/SSSD/sssd/issues/5135
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