Security update for libu2f-host SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2019:1749-1 Final 1 1 2019-07-04T14:06:56Z current 2019-07-04T14:06:56Z 2019-07-04T14:06:56Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for libu2f-host This update for libu2f-host and pam_u2f to version 1.0.8 fixes the following issues: Security issues fixed for libu2f-host: - CVE-2019-9578: Fixed a memory leak due to a wrong parse of init's response (bsc#1128140). - CVE-2018-20340: Fixed an unchecked buffer, which could allow a buffer overflow with a custom made malicious USB device (bsc#1124781). Security issues fixed for pam_u2f: - CVE-2019-12209: Fixed an issue where symlinks in the user's directory were followed (bsc#1135729). - CVE-2019-12210: Fixed file descriptor leaks (bsc#1135727). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2019-1749,SUSE-SLE-DESKTOP-12-SP4-2019-1749,SUSE-SLE-SERVER-12-SP4-2019-1749 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2019/suse-su-20191749-1/ Link for SUSE-SU-2019:1749-1 https://lists.suse.com/pipermail/sle-security-updates/2019-July/005663.html E-Mail link for SUSE-SU-2019:1749-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1124781 SUSE Bug 1124781 https://bugzilla.suse.com/1128140 SUSE Bug 1128140 https://bugzilla.suse.com/1135727 SUSE Bug 1135727 https://bugzilla.suse.com/1135729 SUSE Bug 1135729 https://www.suse.com/security/cve/CVE-2018-20340/ SUSE CVE CVE-2018-20340 page https://www.suse.com/security/cve/CVE-2019-12209/ SUSE CVE CVE-2019-12209 page https://www.suse.com/security/cve/CVE-2019-12210/ SUSE CVE CVE-2019-12210 page https://www.suse.com/security/cve/CVE-2019-9578/ SUSE CVE CVE-2019-9578 page SUSE Linux Enterprise Desktop 12 SP4 SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP4 libu2f-host-devel-1.1.6-3.5.1 libu2f-host-doc-1.1.6-3.5.1 libu2f-host0-1.1.6-3.5.1 pam_u2f-1.0.8-3.3.1 u2f-host-1.1.6-3.5.1 libu2f-host0-1.1.6-3.5.1 as a component of SUSE Linux Enterprise Desktop 12 SP4 pam_u2f-1.0.8-3.3.1 as a component of SUSE Linux Enterprise Desktop 12 SP4 libu2f-host0-1.1.6-3.5.1 as a component of SUSE Linux Enterprise Server 12 SP4 pam_u2f-1.0.8-3.3.1 as a component of SUSE Linux Enterprise Server 12 SP4 libu2f-host0-1.1.6-3.5.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 pam_u2f-1.0.8-3.3.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 Yubico libu2f-host 1.1.6 contains unchecked buffers in devs.c, which could enable a malicious token to exploit a buffer overflow. An attacker could use this to attempt to execute malicious code using a crafted USB device masquerading as a security token on a computer where the affected library is currently in use. It is not possible to perform this attack with a genuine YubiKey. CVE-2018-20340 SUSE Linux Enterprise Desktop 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Desktop 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:pam_u2f-1.0.8-3.3.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2019/suse-su-20191749-1/ https://www.suse.com/security/cve/CVE-2018-20340.html CVE-2018-20340 https://bugzilla.suse.com/1124781 SUSE Bug 1124781 Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information. CVE-2019-12209 SUSE Linux Enterprise Desktop 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Desktop 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:pam_u2f-1.0.8-3.3.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2019/suse-su-20191749-1/ https://www.suse.com/security/cve/CVE-2019-12209.html CVE-2019-12209 https://bugzilla.suse.com/1087061 SUSE Bug 1087061 https://bugzilla.suse.com/1135727 SUSE Bug 1135727 https://bugzilla.suse.com/1135729 SUSE Bug 1135729 In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation. CVE-2019-12210 SUSE Linux Enterprise Desktop 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Desktop 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:pam_u2f-1.0.8-3.3.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2019/suse-su-20191749-1/ https://www.suse.com/security/cve/CVE-2019-12210.html CVE-2019-12210 https://bugzilla.suse.com/1087061 SUSE Bug 1087061 https://bugzilla.suse.com/1135727 SUSE Bug 1135727 https://bugzilla.suse.com/1135729 SUSE Bug 1135729 In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device. CVE-2019-9578 SUSE Linux Enterprise Desktop 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Desktop 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server 12 SP4:pam_u2f-1.0.8-3.3.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:libu2f-host0-1.1.6-3.5.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:pam_u2f-1.0.8-3.3.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2019/suse-su-20191749-1/ https://www.suse.com/security/cve/CVE-2019-9578.html CVE-2019-9578 https://bugzilla.suse.com/1128140 SUSE Bug 1128140