Important: sssd

Issue Overview:

A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3621)

A vulnerability was found in SSSD, in the libsss_certmap functionality. 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. FreeIPA uses mapping rules to map a certificate presented during a PKINIT authentication request to the corresponding principal. The mapping filter is vulnerable to LDAP filter injection. The search result can be influenced by values in the certificate, which may be attacker controlled. In the most extreme case, an attacker could gain control of the admin account, leading to full domain takeover. (CVE-2022-4254)

Affected Packages:

sssd

Issue Correction:
Run yum update sssd to update your system.

New Packages:

i686:  
    sssd-tools-1.16.4-21.27.amzn1.i686  
    libsss_simpleifp-devel-1.16.4-21.27.amzn1.i686  
    python27-sss-1.16.4-21.27.amzn1.i686  
    sssd-ipa-1.16.4-21.27.amzn1.i686  
    sssd-libwbclient-devel-1.16.4-21.27.amzn1.i686  
    libsss_idmap-1.16.4-21.27.amzn1.i686  
    libsss_nss_idmap-1.16.4-21.27.amzn1.i686  
    libsss_certmap-1.16.4-21.27.amzn1.i686  
    sssd-client-1.16.4-21.27.amzn1.i686  
    sssd-common-1.16.4-21.27.amzn1.i686  
    libipa_hbac-devel-1.16.4-21.27.amzn1.i686  
    sssd-krb5-1.16.4-21.27.amzn1.i686  
    libsss_autofs-1.16.4-21.27.amzn1.i686  
    sssd-common-pac-1.16.4-21.27.amzn1.i686  
    sssd-1.16.4-21.27.amzn1.i686  
    libsss_certmap-devel-1.16.4-21.27.amzn1.i686  
    sssd-debuginfo-1.16.4-21.27.amzn1.i686  
    sssd-libwbclient-1.16.4-21.27.amzn1.i686  
    python27-libipa_hbac-1.16.4-21.27.amzn1.i686  
    libsss_nss_idmap-devel-1.16.4-21.27.amzn1.i686  
    sssd-ad-1.16.4-21.27.amzn1.i686  
    libipa_hbac-1.16.4-21.27.amzn1.i686  
    sssd-dbus-1.16.4-21.27.amzn1.i686  
    libsss_simpleifp-1.16.4-21.27.amzn1.i686  
    sssd-krb5-common-1.16.4-21.27.amzn1.i686  
    python27-libsss_nss_idmap-1.16.4-21.27.amzn1.i686  
    sssd-winbind-idmap-1.16.4-21.27.amzn1.i686  
    sssd-ldap-1.16.4-21.27.amzn1.i686  
    sssd-proxy-1.16.4-21.27.amzn1.i686  
    libsss_idmap-devel-1.16.4-21.27.amzn1.i686  
    python27-sss-murmur-1.16.4-21.27.amzn1.i686  
    libsss_sudo-1.16.4-21.27.amzn1.i686  
  
noarch:  
    python27-sssdconfig-1.16.4-21.27.amzn1.noarch  
  
src:  
    sssd-1.16.4-21.27.amzn1.src  
  
x86_64:  
    libsss_autofs-1.16.4-21.27.amzn1.x86_64  
    sssd-krb5-common-1.16.4-21.27.amzn1.x86_64  
    sssd-winbind-idmap-1.16.4-21.27.amzn1.x86_64  
    libsss_simpleifp-1.16.4-21.27.amzn1.x86_64  
    sssd-common-1.16.4-21.27.amzn1.x86_64  
    sssd-dbus-1.16.4-21.27.amzn1.x86_64  
    python27-libsss_nss_idmap-1.16.4-21.27.amzn1.x86_64  
    libsss_nss_idmap-1.16.4-21.27.amzn1.x86_64  
    libsss_idmap-devel-1.16.4-21.27.amzn1.x86_64  
    sssd-common-pac-1.16.4-21.27.amzn1.x86_64  
    libsss_nss_idmap-devel-1.16.4-21.27.amzn1.x86_64  
    libsss_certmap-devel-1.16.4-21.27.amzn1.x86_64  
    libipa_hbac-1.16.4-21.27.amzn1.x86_64  
    libsss_certmap-1.16.4-21.27.amzn1.x86_64  
    python27-sss-murmur-1.16.4-21.27.amzn1.x86_64  
    libsss_sudo-1.16.4-21.27.amzn1.x86_64  
    libsss_idmap-1.16.4-21.27.amzn1.x86_64  
    sssd-client-1.16.4-21.27.amzn1.x86_64  
    sssd-tools-1.16.4-21.27.amzn1.x86_64  
    sssd-proxy-1.16.4-21.27.amzn1.x86_64  
    sssd-1.16.4-21.27.amzn1.x86_64  
    python27-libipa_hbac-1.16.4-21.27.amzn1.x86_64  
    libsss_simpleifp-devel-1.16.4-21.27.amzn1.x86_64  
    sssd-libwbclient-devel-1.16.4-21.27.amzn1.x86_64  
    sssd-debuginfo-1.16.4-21.27.amzn1.x86_64  
    sssd-krb5-1.16.4-21.27.amzn1.x86_64  
    sssd-ipa-1.16.4-21.27.amzn1.x86_64  
    sssd-ldap-1.16.4-21.27.amzn1.x86_64  
    python27-sss-1.16.4-21.27.amzn1.x86_64  
    sssd-libwbclient-1.16.4-21.27.amzn1.x86_64  
    libipa_hbac-devel-1.16.4-21.27.amzn1.x86_64  
    sssd-ad-1.16.4-21.27.amzn1.x86_64  

Additional References

Red Hat: CVE-2021-3621, CVE-2022-4254

Mitre: CVE-2021-3621, CVE-2022-4254