Amazon Linux 2023 Security Advisory: ALAS2023-2026-1984
Advisory Released Date: 2026-07-20
Advisory Updated Date: 2026-07-20
FAQs regarding Amazon Linux ALAS/CVE Severity
A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit. (CVE-2026-12610)
A flaw was found in SSSD's LDAP sudo provider. When the ldap_sudo_search_base option is not explicitly configured, SSSD searches the entire LDAP directory tree for sudoRole objects. An authenticated attacker with write access to any subtree can inject a sudoRole object granting root-level sudo privileges on all SSSD-enrolled hosts. (CVE-2026-14474)
A path traversal flaw was found in SSSD's AD GPO provider. The ad_gpo_extract_smb_components() function does not sanitize .. sequences in the gPCFileSysPath LDAP attribute, allowing an attacker with AD GPO management access to write files outside the GPO cache directory as root. On default RHEL configurations with SELinux enforcing, this can be used to inject Kerberos configuration leading to authentication bypass. (CVE-2026-14476)
A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS). (CVE-2026-6245)
Affected Packages:
sssd
Issue Correction:
Run dnf update sssd --releasever 2023.12.20260720 or dnf update --advisory ALAS2023-2026-1984 --releasever 2023.12.20260720 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
aarch64:
libsss_certmap-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libsss_nss_idmap-2.9.4-1.amzn2023.0.4.aarch64
sssd-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-debugsource-2.9.4-1.amzn2023.0.4.aarch64
python3-libipa_hbac-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libsss_simpleifp-2.9.4-1.amzn2023.0.4.aarch64
sssd-tools-2.9.4-1.amzn2023.0.4.aarch64
sssd-nfs-idmap-2.9.4-1.amzn2023.0.4.aarch64
python3-sss-murmur-2.9.4-1.amzn2023.0.4.aarch64
sssd-client-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-dbus-2.9.4-1.amzn2023.0.4.aarch64
python3-libipa_hbac-2.9.4-1.amzn2023.0.4.aarch64
sssd-winbind-idmap-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
python3-sss-2.9.4-1.amzn2023.0.4.aarch64
libsss_certmap-2.9.4-1.amzn2023.0.4.aarch64
sssd-client-2.9.4-1.amzn2023.0.4.aarch64
libsss_idmap-devel-2.9.4-1.amzn2023.0.4.aarch64
sssd-proxy-2.9.4-1.amzn2023.0.4.aarch64
sssd-krb5-2.9.4-1.amzn2023.0.4.aarch64
libsss_simpleifp-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-tools-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-ldap-2.9.4-1.amzn2023.0.4.aarch64
sssd-ipa-2.9.4-1.amzn2023.0.4.aarch64
sssd-ldap-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-2.9.4-1.amzn2023.0.4.aarch64
libsss_sudo-2.9.4-1.amzn2023.0.4.aarch64
sssd-winbind-idmap-2.9.4-1.amzn2023.0.4.aarch64
sssd-krb5-common-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libsss_idmap-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-common-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-ipa-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libipa_hbac-2.9.4-1.amzn2023.0.4.aarch64
sssd-common-pac-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-dbus-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-proxy-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-common-2.9.4-1.amzn2023.0.4.aarch64
python3-sss-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-nfs-idmap-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libsss_certmap-devel-2.9.4-1.amzn2023.0.4.aarch64
libsss_simpleifp-devel-2.9.4-1.amzn2023.0.4.aarch64
libsss_idmap-2.9.4-1.amzn2023.0.4.aarch64
python3-sss-murmur-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-krb5-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libsss_nss_idmap-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libsss_autofs-2.9.4-1.amzn2023.0.4.aarch64
sssd-ad-2.9.4-1.amzn2023.0.4.aarch64
sssd-common-pac-2.9.4-1.amzn2023.0.4.aarch64
sssd-kcm-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libsss_nss_idmap-devel-2.9.4-1.amzn2023.0.4.aarch64
sssd-idp-2.9.4-1.amzn2023.0.4.aarch64
libsss_autofs-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-ad-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
python3-libsss_nss_idmap-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
libipa_hbac-devel-2.9.4-1.amzn2023.0.4.aarch64
python3-libsss_nss_idmap-2.9.4-1.amzn2023.0.4.aarch64
sssd-kcm-2.9.4-1.amzn2023.0.4.aarch64
libsss_sudo-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-krb5-common-2.9.4-1.amzn2023.0.4.aarch64
libipa_hbac-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
sssd-idp-debuginfo-2.9.4-1.amzn2023.0.4.aarch64
noarch:
python3-sssdconfig-2.9.4-1.amzn2023.0.4.noarch
src:
sssd-2.9.4-1.amzn2023.0.4.src
x86_64:
sssd-common-pac-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-ldap-2.9.4-1.amzn2023.0.4.x86_64
sssd-common-2.9.4-1.amzn2023.0.4.x86_64
sssd-krb5-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libipa_hbac-2.9.4-1.amzn2023.0.4.x86_64
sssd-dbus-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-ipa-2.9.4-1.amzn2023.0.4.x86_64
sssd-common-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-debugsource-2.9.4-1.amzn2023.0.4.x86_64
sssd-tools-2.9.4-1.amzn2023.0.4.x86_64
sssd-nfs-idmap-2.9.4-1.amzn2023.0.4.x86_64
libsss_sudo-2.9.4-1.amzn2023.0.4.x86_64
sssd-ipa-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libsss_idmap-devel-2.9.4-1.amzn2023.0.4.x86_64
sssd-ad-2.9.4-1.amzn2023.0.4.x86_64
sssd-proxy-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-krb5-common-2.9.4-1.amzn2023.0.4.x86_64
libsss_certmap-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
python3-libipa_hbac-2.9.4-1.amzn2023.0.4.x86_64
libsss_autofs-2.9.4-1.amzn2023.0.4.x86_64
python3-sss-murmur-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
python3-sss-2.9.4-1.amzn2023.0.4.x86_64
libsss_nss_idmap-devel-2.9.4-1.amzn2023.0.4.x86_64
libsss_certmap-devel-2.9.4-1.amzn2023.0.4.x86_64
sssd-ad-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-krb5-common-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
python3-sss-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-winbind-idmap-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-2.9.4-1.amzn2023.0.4.x86_64
libsss_idmap-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-proxy-2.9.4-1.amzn2023.0.4.x86_64
libsss_idmap-2.9.4-1.amzn2023.0.4.x86_64
sssd-idp-2.9.4-1.amzn2023.0.4.x86_64
python3-sss-murmur-2.9.4-1.amzn2023.0.4.x86_64
libsss_simpleifp-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-client-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libsss_simpleifp-2.9.4-1.amzn2023.0.4.x86_64
sssd-ldap-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-winbind-idmap-2.9.4-1.amzn2023.0.4.x86_64
python3-libsss_nss_idmap-2.9.4-1.amzn2023.0.4.x86_64
sssd-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
python3-libipa_hbac-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-nfs-idmap-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libsss_nss_idmap-2.9.4-1.amzn2023.0.4.x86_64
sssd-client-2.9.4-1.amzn2023.0.4.x86_64
sssd-dbus-2.9.4-1.amzn2023.0.4.x86_64
sssd-common-pac-2.9.4-1.amzn2023.0.4.x86_64
sssd-kcm-2.9.4-1.amzn2023.0.4.x86_64
python3-libsss_nss_idmap-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libsss_nss_idmap-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libsss_certmap-2.9.4-1.amzn2023.0.4.x86_64
sssd-idp-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libipa_hbac-devel-2.9.4-1.amzn2023.0.4.x86_64
sssd-krb5-2.9.4-1.amzn2023.0.4.x86_64
libsss_autofs-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-tools-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libsss_sudo-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libipa_hbac-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
sssd-kcm-debuginfo-2.9.4-1.amzn2023.0.4.x86_64
libsss_simpleifp-devel-2.9.4-1.amzn2023.0.4.x86_64