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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.2472 Important: ntp security update 22 December 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ntp Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 5 Red Hat Enterprise Linux WS/Desktop 5 Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2014-9296 CVE-2014-9295 CVE-2014-9294 CVE-2014-9293 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2014-2024.html https://rhn.redhat.com/errata/RHSA-2014-2025.html Comment: This bulletin contains two (2) Red Hat security advisories. This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running ntp check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: ntp security update Advisory ID: RHSA-2014:2024-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-2024.html Issue date: 2014-12-20 CVE Names: CVE-2014-9293 CVE-2014-9294 CVE-2014-9295 CVE-2014-9296 ===================================================================== 1. Summary: Updated ntp packages that fix several security issues are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64 3. Description: The Network Time Protocol (NTP) is used to synchronize a computer's time with a referenced time source. Multiple buffer overflow flaws were discovered in ntpd's crypto_recv(), ctl_putdata(), and configure() functions. A remote attacker could use either of these flaws to send a specially crafted request packet that could crash ntpd or, potentially, execute arbitrary code with the privileges of the ntp user. Note: the crypto_recv() flaw requires non-default configurations to be active, while the ctl_putdata() flaw, by default, can only be exploited via local attackers, and the configure() flaw requires additional authentication to exploit. (CVE-2014-9295) It was found that ntpd automatically generated weak keys for its internal use if no ntpdc request authentication key was specified in the ntp.conf configuration file. A remote attacker able to match the configured IP restrictions could guess the generated key, and possibly use it to send ntpdc query or configuration requests. (CVE-2014-9293) It was found that ntp-keygen used a weak method for generating MD5 keys. This could possibly allow an attacker to guess generated MD5 keys that could then be used to spoof an NTP client or server. Note: it is recommended to regenerate any MD5 keys that had explicitly been generated with ntp-keygen; the default installation does not contain such keys). (CVE-2014-9294) A missing return statement in the receive() function could potentially allow a remote attacker to bypass NTP's authentication mechanism. (CVE-2014-9296) All ntp users are advised to upgrade to this updated package, which contains backported patches to resolve these issues. After installing the update, the ntpd daemon will restart automatically. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1176032 - CVE-2014-9293 ntp: automatic generation of weak default key in config_auth() 1176035 - CVE-2014-9294 ntp: ntp-keygen uses weak random number generator and seed when generating MD5 keys 1176037 - CVE-2014-9295 ntp: Multiple buffer overflows via specially-crafted packets 1176040 - CVE-2014-9296 ntp: receive() missing return on error 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ntp-4.2.6p5-2.el6_6.src.rpm i386: ntp-4.2.6p5-2.el6_6.i686.rpm ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm ntpdate-4.2.6p5-2.el6_6.i686.rpm x86_64: ntp-4.2.6p5-2.el6_6.x86_64.rpm ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntpdate-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm ntp-perl-4.2.6p5-2.el6_6.i686.rpm noarch: ntp-doc-4.2.6p5-2.el6_6.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ntp-4.2.6p5-2.el6_6.src.rpm x86_64: ntp-4.2.6p5-2.el6_6.x86_64.rpm ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntpdate-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): noarch: ntp-doc-4.2.6p5-2.el6_6.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ntp-4.2.6p5-2.el6_6.src.rpm i386: ntp-4.2.6p5-2.el6_6.i686.rpm ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm ntpdate-4.2.6p5-2.el6_6.i686.rpm ppc64: ntp-4.2.6p5-2.el6_6.ppc64.rpm ntp-debuginfo-4.2.6p5-2.el6_6.ppc64.rpm ntpdate-4.2.6p5-2.el6_6.ppc64.rpm s390x: ntp-4.2.6p5-2.el6_6.s390x.rpm ntp-debuginfo-4.2.6p5-2.el6_6.s390x.rpm ntpdate-4.2.6p5-2.el6_6.s390x.rpm x86_64: ntp-4.2.6p5-2.el6_6.x86_64.rpm ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntpdate-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm ntp-perl-4.2.6p5-2.el6_6.i686.rpm noarch: ntp-doc-4.2.6p5-2.el6_6.noarch.rpm ppc64: ntp-debuginfo-4.2.6p5-2.el6_6.ppc64.rpm ntp-perl-4.2.6p5-2.el6_6.ppc64.rpm s390x: ntp-debuginfo-4.2.6p5-2.el6_6.s390x.rpm ntp-perl-4.2.6p5-2.el6_6.s390x.rpm x86_64: ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ntp-4.2.6p5-2.el6_6.src.rpm i386: ntp-4.2.6p5-2.el6_6.i686.rpm ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm ntpdate-4.2.6p5-2.el6_6.i686.rpm x86_64: ntp-4.2.6p5-2.el6_6.x86_64.rpm ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntpdate-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-2.el6_6.i686.rpm ntp-perl-4.2.6p5-2.el6_6.i686.rpm noarch: ntp-doc-4.2.6p5-2.el6_6.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-2.el6_6.x86_64.rpm ntp-perl-4.2.6p5-2.el6_6.x86_64.rpm Red Hat Enterprise Linux Client (v. 7): Source: ntp-4.2.6p5-19.el7_0.src.rpm x86_64: ntp-4.2.6p5-19.el7_0.x86_64.rpm ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm ntpdate-4.2.6p5-19.el7_0.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): noarch: ntp-doc-4.2.6p5-19.el7_0.noarch.rpm ntp-perl-4.2.6p5-19.el7_0.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm sntp-4.2.6p5-19.el7_0.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: ntp-4.2.6p5-19.el7_0.src.rpm x86_64: ntp-4.2.6p5-19.el7_0.x86_64.rpm ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm ntpdate-4.2.6p5-19.el7_0.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): noarch: ntp-doc-4.2.6p5-19.el7_0.noarch.rpm ntp-perl-4.2.6p5-19.el7_0.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm sntp-4.2.6p5-19.el7_0.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: ntp-4.2.6p5-19.el7_0.src.rpm ppc64: ntp-4.2.6p5-19.el7_0.ppc64.rpm ntp-debuginfo-4.2.6p5-19.el7_0.ppc64.rpm ntpdate-4.2.6p5-19.el7_0.ppc64.rpm s390x: ntp-4.2.6p5-19.el7_0.s390x.rpm ntp-debuginfo-4.2.6p5-19.el7_0.s390x.rpm ntpdate-4.2.6p5-19.el7_0.s390x.rpm x86_64: ntp-4.2.6p5-19.el7_0.x86_64.rpm ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm ntpdate-4.2.6p5-19.el7_0.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): noarch: ntp-doc-4.2.6p5-19.el7_0.noarch.rpm ntp-perl-4.2.6p5-19.el7_0.noarch.rpm ppc64: ntp-debuginfo-4.2.6p5-19.el7_0.ppc64.rpm sntp-4.2.6p5-19.el7_0.ppc64.rpm s390x: ntp-debuginfo-4.2.6p5-19.el7_0.s390x.rpm sntp-4.2.6p5-19.el7_0.s390x.rpm x86_64: ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm sntp-4.2.6p5-19.el7_0.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: ntp-4.2.6p5-19.el7_0.src.rpm x86_64: ntp-4.2.6p5-19.el7_0.x86_64.rpm ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm ntpdate-4.2.6p5-19.el7_0.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): noarch: ntp-doc-4.2.6p5-19.el7_0.noarch.rpm ntp-perl-4.2.6p5-19.el7_0.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-19.el7_0.x86_64.rpm sntp-4.2.6p5-19.el7_0.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2014-9293 https://access.redhat.com/security/cve/CVE-2014-9294 https://access.redhat.com/security/cve/CVE-2014-9295 https://access.redhat.com/security/cve/CVE-2014-9296 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2014 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFUlOKcXlSAg2UNWIIRAvBoAKCfw+j4ua5JaIRMc5eKkny9G1yWlgCgufNc EvBImTd+Vq7//UExow1FP4U= =m/Eb - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: ntp security update Advisory ID: RHSA-2014:2025-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-2025.html Issue date: 2014-12-20 CVE Names: CVE-2014-9293 CVE-2014-9294 CVE-2014-9295 ===================================================================== 1. Summary: Updated ntp packages that fix several security issues are now available for Red Hat Enterprise Linux 5. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: The Network Time Protocol (NTP) is used to synchronize a computer's time with a referenced time source. Multiple buffer overflow flaws were discovered in ntpd's crypto_recv(), ctl_putdata(), and configure() functions. A remote attacker could use either of these flaws to send a specially crafted request packet that could crash ntpd or, potentially, execute arbitrary code with the privileges of the ntp user. Note: the crypto_recv() flaw requires non-default configurations to be active, while the ctl_putdata() flaw, by default, can only be exploited via local attackers, and the configure() flaw requires additional authentication to exploit. (CVE-2014-9295) It was found that ntpd automatically generated weak keys for its internal use if no ntpdc request authentication key was specified in the ntp.conf configuration file. A remote attacker able to match the configured IP restrictions could guess the generated key, and possibly use it to send ntpdc query or configuration requests. (CVE-2014-9293) It was found that ntp-keygen used a weak method for generating MD5 keys. This could possibly allow an attacker to guess generated MD5 keys that could then be used to spoof an NTP client or server. Note: it is recommended to regenerate any MD5 keys that had explicitly been generated with ntp-keygen; the default installation does not contain such keys). (CVE-2014-9294) All ntp users are advised to upgrade to this updated package, which contains backported patches to resolve these issues. After installing the update, the ntpd daemon will restart automatically. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1176032 - CVE-2014-9293 ntp: automatic generation of weak default key in config_auth() 1176035 - CVE-2014-9294 ntp: ntp-keygen uses weak random number generator and seed when generating MD5 keys 1176037 - CVE-2014-9295 ntp: Multiple buffer overflows via specially-crafted packets 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ntp-4.2.2p1-18.el5_11.src.rpm i386: ntp-4.2.2p1-18.el5_11.i386.rpm ntp-debuginfo-4.2.2p1-18.el5_11.i386.rpm x86_64: ntp-4.2.2p1-18.el5_11.x86_64.rpm ntp-debuginfo-4.2.2p1-18.el5_11.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ntp-4.2.2p1-18.el5_11.src.rpm i386: ntp-4.2.2p1-18.el5_11.i386.rpm ntp-debuginfo-4.2.2p1-18.el5_11.i386.rpm ia64: ntp-4.2.2p1-18.el5_11.ia64.rpm ntp-debuginfo-4.2.2p1-18.el5_11.ia64.rpm ppc: ntp-4.2.2p1-18.el5_11.ppc.rpm ntp-debuginfo-4.2.2p1-18.el5_11.ppc.rpm s390x: ntp-4.2.2p1-18.el5_11.s390x.rpm ntp-debuginfo-4.2.2p1-18.el5_11.s390x.rpm x86_64: ntp-4.2.2p1-18.el5_11.x86_64.rpm ntp-debuginfo-4.2.2p1-18.el5_11.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2014-9293 https://access.redhat.com/security/cve/CVE-2014-9294 https://access.redhat.com/security/cve/CVE-2014-9295 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2014 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFUlOK5XlSAg2UNWIIRAjqWAKCSca9s0BI59EvKuZnchQpcOfrj7wCgrae3 UA8SnygB/UEFPTKirinHijI= =kt9k - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVJdnvRLndAQH1ShLAQJ6VQ/9FNSeXqpkbpr5dBR93GDxXo40JkUWSHH0 hcCFW6E4SjhSGlN3k6lrsY0U/RsfvuaJSRQoPuMYthNdis20s1haMkF58X2966IU 4fKFPpqqE5wSfxlfuFfkfEYrgN8WnSVclnJO5/EpBaM/4jL0Y+WxGSKgpSMc8Wny EdPQVXImasrXhhbovry3SldyGqd3mD9i3SCK/Ana9iZnw+/Hj0tncTaW6/23LXSH Q/FpUQOkxxs4QpCKU0ia/BJw4n2/5Dsrab6ObMAPZMk1Nx6ld6qR9zs8sfJ2/OnI B2eMpCt0IptpEz1cPa1RJufUkzr6sB1fCOWzZBLwE3n6/Xeg7I0pvMdh5kXXl3mf 6JWNXnyg2XpuIzjg++J+pK84hec2vAZ2yMiNaUaVktYG4MUqRv8rIiOWW6gMygL3 V7p6NdgBBNlSQHYc6yIBnIulMmoNLQ6vckU2ofgf5xxqXX4zEGqUk4RpSlHkyvWi SfaORenIt/NhV8iAmmWSSIJ4e3J5ZlBnLUq8q9pSK4xnF7vkD+zHbGMQLOQJ7fFj kYLY7+o9Oql7t+0PiO0cGbEDvD4Q8l7Egqrqut/yqUKEdwgH0mivKEfac1dTOdpI 7fslLw9wtA1Mh7lqpkeXt+VNy3ldAwCwnjgxm44Jr/M0OvFH1AjQtLxyn+1ozQtm 8+FM2yU8YJ4= =8K/3 -----END PGP SIGNATURE-----