Vulnerabilities > CVE-2019-9578 - Use of Uninitialized Resource vulnerability in Yubico Libu2F-Host
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-202004-15.NASL description The remote host is affected by the vulnerability described in GLSA-202004-15 (libu2f-host: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in libu2f-host. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could entice a user to plug-in a malicious USB device, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. Workaround : There is no known workaround at this time. last seen 2020-05-08 modified 2020-05-01 plugin id 136214 published 2020-05-01 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136214 title GLSA-202004-15 : libu2f-host: Multiple vulnerabilities code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 202004-15. # # The advisory text is Copyright (C) 2001-2020 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(136214); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07"); script_cve_id("CVE-2018-20340", "CVE-2019-9578"); script_xref(name:"GLSA", value:"202004-15"); script_name(english:"GLSA-202004-15 : libu2f-host: Multiple vulnerabilities"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-202004-15 (libu2f-host: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in libu2f-host. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could entice a user to plug-in a malicious USB device, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. Workaround : There is no known workaround at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/202004-15" ); script_set_attribute( attribute:"solution", value: "All libu2f-host users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=app-crypt/libu2f-host-1.1.10'" ); script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-20340"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:libu2f-host"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/05"); script_set_attribute(attribute:"patch_publication_date", value:"2020/04/30"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/01"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Gentoo Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("qpkg.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo"); if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (qpkg_check(package:"app-crypt/libu2f-host", unaffected:make_list("ge 1.1.10"), vulnerable:make_list("lt 1.1.10"))) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get()); else security_warning(0); exit(0); } else { tested = qpkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libu2f-host"); }
NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-1749-1.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 126501 published 2019-07-05 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126501 title SUSE SLED12 / SLES12 Security Update : libu2f-host (SUSE-SU-2019:1749-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2019:1749-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(126501); script_version("1.3"); script_cvs_date("Date: 2020/01/08"); script_cve_id("CVE-2018-20340", "CVE-2019-12209", "CVE-2019-12210", "CVE-2019-9578"); script_name(english:"SUSE SLED12 / SLES12 Security Update : libu2f-host (SUSE-SU-2019:1749-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "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). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1124781" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1128140" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1135727" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1135729" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-20340/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-12209/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-12210/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-9578/" ); # https://www.suse.com/support/update/announcement/2019/suse-su-20191749-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?61def403" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Server 12-SP4:zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-1749=1 SUSE Linux Enterprise Desktop 12-SP4:zypper in -t patch SUSE-SLE-DESKTOP-12-SP4-2019-1749=1" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libu2f-host-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libu2f-host0"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libu2f-host0-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:pam_u2f"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:pam_u2f-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:pam_u2f-debugsource"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/05"); script_set_attribute(attribute:"patch_publication_date", value:"2019/07/04"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/05"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES12" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP4", os_ver + " SP" + sp); if (os_ver == "SLED12" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP4", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES12", sp:"4", reference:"libu2f-host-debugsource-1.1.6-3.5.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"libu2f-host0-1.1.6-3.5.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"libu2f-host0-debuginfo-1.1.6-3.5.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"pam_u2f-1.0.8-3.3.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"pam_u2f-debuginfo-1.0.8-3.3.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"pam_u2f-debugsource-1.0.8-3.3.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"libu2f-host-debugsource-1.1.6-3.5.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"libu2f-host0-1.1.6-3.5.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"libu2f-host0-debuginfo-1.1.6-3.5.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"pam_u2f-1.0.8-3.3.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"pam_u2f-debuginfo-1.0.8-3.3.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"pam_u2f-debugsource-1.0.8-3.3.1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libu2f-host"); }
NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-1708.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 126883 published 2019-07-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126883 title openSUSE Security Update : libu2f-host / pam_u2f (openSUSE-2019-1708) NASL family Fedora Local Security Checks NASL id FEDORA_2019-FE6D1FBFFA.NASL description Security fix for CVE-2019-9578 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 124559 published 2019-05-02 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124559 title Fedora 30 : libu2f-host (2019-fe6d1fbffa) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-1750-1.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 126502 published 2019-07-05 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126502 title SUSE SLED15 / SLES15 Security Update : libu2f-host, pam_u2f (SUSE-SU-2019:1750-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-1725.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 126889 published 2019-07-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126889 title openSUSE Security Update : libu2f-host / pam_u2f (openSUSE-2019-1725)
References
- https://github.com/Yubico/libu2f-host/commit/e4bb58cc8b6202a421e65f8230217d8ae6e16eb5
- https://developers.yubico.com/libu2f-host/Release_Notes.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html
- https://blog.inhq.net/posts/yubico-libu2f-host-vuln-part2/
- https://security.gentoo.org/glsa/202004-15
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4YCFMSNMXZ7XC4U6WXPQA7JCXC6VOAJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMA4H6AZFYIR3LA5VKKEJZNCCIVMUCFQ/