Vulnerabilities > CVE-2015-8158 - Denial of Service vulnerability in NTP
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
The getresponse function in ntpq in NTP versions before 4.2.8p9 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (infinite loop) via crafted packets with incorrect values. <a href="http://cwe.mitre.org/data/definitions/835.html">CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')</a>
Vulnerable Configurations
Nessus
NASL family Slackware Local Security Checks NASL id SLACKWARE_SSA_2016-054-04.NASL description New ntp packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues. last seen 2020-06-01 modified 2020-06-02 plugin id 88912 published 2016-02-24 reporter This script is Copyright (C) 2016-2017 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/88912 title Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : ntp (SSA:2016-054-04) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-559.NASL description Several vulnerabilities were discovered in the Network Time Protocol daemon and utility programs : CVE-2015-7974 Matt Street discovered that insufficient key validation allows impersonation attacks between authenticated peers. CVE-2015-7977 / CVE-2015-7978 Stephen Gray discovered that a NULL pointer dereference and a buffer overflow in the handling of last seen 2020-03-17 modified 2016-07-26 plugin id 92546 published 2016-07-26 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/92546 title Debian DLA-559-1 : ntp security update NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_5237F5D7C02011E5B397D050996490D0.NASL description Network Time Foundation reports : NTF last seen 2020-06-01 modified 2020-06-02 plugin id 88068 published 2016-01-22 reporter This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88068 title FreeBSD : ntp -- multiple vulnerabilities (5237f5d7-c020-11e5-b397-d050996490d0) NASL family Fedora Local Security Checks NASL id FEDORA_2016-8BB1932088.NASL description Security fix for CVE-2015-7974, CVE-2015-8138, CVE-2015-7977, CVE-2015-7978, CVE-2015-7979, CVE-2015-8158 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-03-04 plugin id 89577 published 2016-03-04 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/89577 title Fedora 23 : ntp-4.2.6p5-36.fc23 (2016-8bb1932088) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3629.NASL description Several vulnerabilities were discovered in the Network Time Protocol daemon and utility programs : - CVE-2015-7974 Matt Street discovered that insufficient key validation allows impersonation attacks between authenticated peers. - CVE-2015-7977 CVE-2015-7978 Stephen Gray discovered that a NULL pointer dereference and a buffer overflow in the handling of last seen 2020-06-01 modified 2020-06-02 plugin id 92571 published 2016-07-27 reporter This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/92571 title Debian DSA-3629-1 : ntp - security update NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-649.NASL description This update for ntp fixes the following issues : - Update to 4.2.8p7 (boo#977446) : - CVE-2016-1547, boo#977459: Validate crypto-NAKs, AKA: CRYPTO-NAK DoS. - CVE-2016-1548, boo#977461: Interleave-pivot - CVE-2016-1549, boo#977451: Sybil vulnerability: ephemeral association attack. - CVE-2016-1550, boo#977464: Improve NTP security against buffer comparison timing attacks. - CVE-2016-1551, boo#977450: Refclock impersonation vulnerability - CVE-2016-2516, boo#977452: Duplicate IPs on unconfig directives will cause an assertion botch in ntpd. - CVE-2016-2517, boo#977455: remote configuration trustedkey/ requestkey/controlkey values are not properly validated. - CVE-2016-2518, boo#977457: Crafted addpeer with hmode > 7 causes array wraparound with MATCH_ASSOC. - CVE-2016-2519, boo#977458: ctl_getitem() return value not always checked. - integrate ntp-fork.patch - Improve the fixes for: CVE-2015-7704, CVE-2015-7705, CVE-2015-7974 - Restrict the parser in the startup script to the first occurrance of last seen 2020-06-05 modified 2016-06-01 plugin id 91403 published 2016-06-01 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/91403 title openSUSE Security Update : ntp (openSUSE-2016-649) NASL family AIX Local Security Checks NASL id AIX_NTP_V3_ADVISORY6.NASL description The version of NTP installed on the remote AIX host is affected by the following vulnerabilities : - A flaw exists in the receive() function due to the use of authenticated broadcast mode. A man-in-the-middle attacker can exploit this to conduct a replay attack. (CVE-2015-7973) - A NULL pointer dereference flaw exists in ntp_request.c that is triggered when handling ntpdc relist commands. A remote attacker can exploit this, via a specially crafted request, to crash the service, resulting in a denial of service condition. (CVE-2015-7977) - An unspecified flaw exists in authenticated broadcast mode. A remote attacker can exploit this, via specially crafted packets, to cause a denial of service condition. (CVE-2015-7979) - A flaw exists in ntpq and ntpdc that allows a remote attacker to disclose sensitive information in timestamps. (CVE-2015-8139) - A flaw exists in the ntpq protocol that is triggered during the handling of an improper sequence of numbers. A man-in-the-middle attacker can exploit this to conduct a replay attack. (CVE-2015-8140) - A flaw exists in the ntpq client that is triggered when handling packets that cause a loop in the getresponse() function. A remote attacker can exploit this to cause an infinite loop, resulting in a denial of service condition. (CVE-2015-8158) last seen 2020-06-01 modified 2020-06-02 plugin id 92356 published 2016-07-18 reporter This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/92356 title AIX NTP v3 Advisory : ntp_advisory6.asc (IV83984) (IV83993) (IV83994) (IV83995) (IV84269) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-1247-1.NASL description ntp was updated to version 4.2.8p6 to fix 28 security issues. Major functional changes : - The last seen 2020-06-01 modified 2020-06-02 plugin id 90991 published 2016-05-09 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/90991 title SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2016:1247-1) NASL family Firewalls NASL id PFSENSE_SA-16_02.NASL description According to its self-reported version number, the remote pfSense install is prior to 2.3. It is, therefore, affected by multiple vulnerabilities. last seen 2020-06-01 modified 2020-06-02 plugin id 106499 published 2018-01-31 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106499 title pfSense < 2.3 Multiple Vulnerabilities (SA-16_01 - SA-16_02) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-1175-1.NASL description ntp was updated to version 4.2.8p6 to fix 12 security issues. These security issues were fixed : - CVE-2015-8158: Fixed potential infinite loop in ntpq (bsc#962966). - CVE-2015-8138: Zero Origin Timestamp Bypass (bsc#963002). - CVE-2015-7979: Off-path Denial of Service (DoS) attack on authenticated broadcast mode (bsc#962784). - CVE-2015-7978: Stack exhaustion in recursive traversal of restriction list (bsc#963000). - CVE-2015-7977: reslist NULL pointer dereference (bsc#962970). - CVE-2015-7976: ntpq saveconfig command allows dangerous characters in filenames (bsc#962802). - CVE-2015-7975: nextvar() missing length check (bsc#962988). - CVE-2015-7974: Skeleton Key: Missing key check allows impersonation between authenticated peers (bsc#962960). - CVE-2015-7973: Replay attack on authenticated broadcast mode (bsc#962995). - CVE-2015-8140: ntpq vulnerable to replay attacks (bsc#962994). - CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose origin (bsc#962997). - CVE-2015-5300: MITM attacker could have forced ntpd to make a step larger than the panic threshold (bsc#951629). The update package also includes non-security fixes. See advisory for details. 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. last seen 2020-06-01 modified 2020-06-02 plugin id 90820 published 2016-05-02 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/90820 title SUSE SLES11 Security Update : ntp (SUSE-SU-2016:1175-1) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2016-1060.NASL description According to the versions of the ntp packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - It was found that ntpd could crash due to an uninitialized variable when processing malformed logconfig configuration commands.(CVE-2015-5194) - It was found that ntpd would exit with a segmentation fault when a statistics type that was not enabled during compilation (e.g. timingstats) was referenced by the statistics or filegen configuration command.(CVE-2015-5195) - It was found that NTP last seen 2020-05-06 modified 2017-05-01 plugin id 99822 published 2017-05-01 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/99822 title EulerOS 2.0 SP1 : ntp (EulerOS-SA-2016-1060) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201607-15.NASL description The remote host is affected by the vulnerability described in GLSA-201607-15 (NTP: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in NTP. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could possibly cause a Denial of Service condition. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 92485 published 2016-07-21 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/92485 title GLSA-201607-15 : NTP: Multiple vulnerabilities NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2016-2583.NASL description From Red Hat Security Advisory 2016:2583 : An update for ntp is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The Network Time Protocol (NTP) is used to synchronize a computer last seen 2020-06-01 modified 2020-06-02 plugin id 94705 published 2016-11-11 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94705 title Oracle Linux 7 : ntp (ELSA-2016-2583) NASL family F5 Networks Local Security Checks NASL id F5_BIGIP_SOL01324833.NASL description The getresponse function in ntpq in NTP versions before 4.2.8p9 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (infinite loop) via crafted packets with incorrect values. (CVE-2015-8158) last seen 2020-06-01 modified 2020-06-02 plugin id 96052 published 2016-12-22 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/96052 title F5 Networks BIG-IP : NTP vulnerability (K01324833) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-1311-1.NASL description This network time protocol server ntp was updated to 4.2.8p6 to fix the following issues : Also yast2-ntp-client was updated to match some sntp syntax changes. (bsc#937837) Major functional changes : - The last seen 2020-06-01 modified 2020-06-02 plugin id 91248 published 2016-05-19 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/91248 title SUSE SLES11 Security Update : ntp (SUSE-SU-2016:1311-1) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1555.NASL description According to the versions of the ntp packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources.(CVE-2016-7426) - ntpq in NTP before 4.2.8p7 allows remote attackers to obtain origin timestamps and then impersonate peers via unspecified vectors.(CVE-2015-8139) - A NULL pointer dereference flaw was found in the way ntpd processed last seen 2020-06-01 modified 2020-06-02 plugin id 125008 published 2019-05-14 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/125008 title EulerOS Virtualization 3.0.1.0 : ntp (EulerOS-SA-2019-1555) NASL family Misc. NASL id NTP_4_2_8P6.NASL description The version of the remote NTP server is 3.x or 4.x prior to 4.2.8p6. It is, therefore, affected by the following vulnerabilities : - A flaw exists in the receive() function due to the use of authenticated broadcast mode. A man-in-the-middle attacker can exploit this to conduct a replay attack. (CVE-2015-7973) - A time serving flaw exists in the trusted key system due to improper key checks. An authenticated, remote attacker can exploit this to perform impersonation attacks between authenticated peers. (CVE-2015-7974) - An overflow condition exists in the nextvar() function due to improper validation of user-supplied input. A local attacker can exploit this to cause a buffer overflow, resulting in a denial of service condition. (CVE-2015-7975) - A flaw exists in ntp_control.c due to improper filtering of special characters in filenames by the saveconfig command. An authenticated, remote attacker can exploit this to inject arbitrary content. (CVE-2015-7976) - A NULL pointer dereference flaw exists in ntp_request.c that is triggered when handling ntpdc relist commands. A remote attacker can exploit this, via a specially crafted request, to crash the service, resulting in a denial of service condition. (CVE-2015-7977) - A flaw exists in ntpdc that is triggered during the handling of the relist command. A remote attacker can exploit this, via recursive traversals of the restriction list, to exhaust available space on the call stack, resulting in a denial of service condition. CVE-2015-7978) - An unspecified flaw exists in authenticated broadcast mode. A remote attacker can exploit this, via specially crafted packets, to cause a denial of service condition. (CVE-2015-7979) - A flaw exists in the receive() function that allows packets with an origin timestamp of zero to bypass security checks. A remote attacker can exploit this to spoof arbitrary content. (CVE-2015-8138) - A flaw exists in ntpq and ntpdc that allows a remote attacker to disclose sensitive information in timestamps. (CVE-2015-8139) - A flaw exists in the ntpq protocol that is triggered during the handling of an improper sequence of numbers. A man-in-the-middle attacker can exploit this to conduct a replay attack. (CVE-2015-8140) - A flaw exists in the ntpq client that is triggered when handling packets that cause a loop in the getresponse() function. A remote attacker can exploit this to cause an infinite loop, resulting in a denial of service condition. (CVE-2015-8158) last seen 2020-06-01 modified 2020-06-02 plugin id 88054 published 2016-01-21 reporter This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/88054 title Network Time Protocol Daemon (ntpd) 3.x / 4.x < 4.2.8p6 Multiple Vulnerabilities NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2016-2583.NASL description An update for ntp is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The Network Time Protocol (NTP) is used to synchronize a computer last seen 2020-06-01 modified 2020-06-02 plugin id 94546 published 2016-11-04 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/94546 title RHEL 7 : ntp (RHSA-2016:2583) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-1912-1.NASL description NTP was updated to version 4.2.8p8 to fix several security issues and to ensure the continued maintainability of the package. These security issues were fixed : CVE-2016-4953: Bad authentication demobilized ephemeral associations (bsc#982065). CVE-2016-4954: Processing spoofed server packets (bsc#982066). CVE-2016-4955: Autokey association reset (bsc#982067). CVE-2016-4956: Broadcast interleave (bsc#982068). CVE-2016-4957: CRYPTO_NAK crash (bsc#982064). CVE-2016-1547: Validate crypto-NAKs to prevent ACRYPTO-NAK DoS (bsc#977459). CVE-2016-1548: Prevent the change of time of an ntpd client or denying service to an ntpd client by forcing it to change from basic client/server mode to interleaved symmetric mode (bsc#977461). CVE-2016-1549: Sybil vulnerability: ephemeral association attack (bsc#977451). CVE-2016-1550: Improve security against buffer comparison timing attacks (bsc#977464). CVE-2016-1551: Refclock impersonation vulnerability (bsc#977450)y CVE-2016-2516: Duplicate IPs on unconfig directives could have caused an assertion botch in ntpd (bsc#977452). CVE-2016-2517: Remote configuration trustedkey/ requestkey/controlkey values are not properly validated (bsc#977455). CVE-2016-2518: Crafted addpeer with hmode > 7 causes array wraparound with MATCH_ASSOC (bsc#977457). CVE-2016-2519: ctl_getitem() return value not always checked (bsc#977458). CVE-2015-8158: Potential Infinite Loop in ntpq (bsc#962966). CVE-2015-8138: Zero Origin Timestamp Bypass (bsc#963002). CVE-2015-7979: Off-path Denial of Service (DoS) attack on authenticated broadcast mode (bsc#962784). CVE-2015-7978: Stack exhaustion in recursive traversal of restriction list (bsc#963000). CVE-2015-7977: reslist NULL pointer dereference (bsc#962970). CVE-2015-7976: ntpq saveconfig command allowed dangerous characters in filenames (bsc#962802). CVE-2015-7975: nextvar() missing length check (bsc#962988). CVE-2015-7974: NTP did not verify peer associations of symmetric keys when authenticating packets, which might have allowed remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a last seen 2020-06-01 modified 2020-06-02 plugin id 93186 published 2016-08-29 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/93186 title SUSE SLES10 Security Update : ntp (SUSE-SU-2016:1912-1) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2016-2583.NASL description An update for ntp is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The Network Time Protocol (NTP) is used to synchronize a computer last seen 2020-06-01 modified 2020-06-02 plugin id 95330 published 2016-11-28 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95330 title CentOS 7 : ntp (CESA-2016:2583) NASL family AIX Local Security Checks NASL id AIX_NTP_V4_ADVISORY6.NASL description The version of NTP installed on the remote AIX host is affected by the following vulnerabilities : - A flaw exists in the receive() function due to the use of authenticated broadcast mode. A man-in-the-middle attacker can exploit this to conduct a replay attack. (CVE-2015-7973) - A NULL pointer dereference flaw exists in ntp_request.c that is triggered when handling ntpdc relist commands. A remote attacker can exploit this, via a specially crafted request, to crash the service, resulting in a denial of service condition. (CVE-2015-7977) - An unspecified flaw exists in authenticated broadcast mode. A remote attacker can exploit this, via specially crafted packets, to cause a denial of service condition. (CVE-2015-7979) - A flaw exists in ntpq and ntpdc that allows a remote attacker to disclose sensitive information in timestamps. (CVE-2015-8139) - A flaw exists in the ntpq protocol that is triggered during the handling of an improper sequence of numbers. A man-in-the-middle attacker can exploit this to conduct a replay attack. (CVE-2015-8140) - A flaw exists in the ntpq client that is triggered when handling packets that cause a loop in the getresponse() function. A remote attacker can exploit this to cause an infinite loop, resulting in a denial of service condition. (CVE-2015-8158) last seen 2020-06-01 modified 2020-06-02 plugin id 92357 published 2016-07-18 reporter This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/92357 title AIX NTP v4 Advisory : ntp_advisory6.asc (IV83983) (IV83992) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2016-649.NASL description It was discovered that ntpd as a client did not correctly check the originate timestamp in received packets. A remote attacker could use this flaw to send a crafted packet to an ntpd client that would effectively disable synchronization with the server, or push arbitrary offset/delay measurements to modify the time on the client. (CVE-2015-8138) A NULL pointer dereference flaw was found in the way ntpd processed last seen 2020-06-01 modified 2020-06-02 plugin id 88661 published 2016-02-10 reporter This script is Copyright (C) 2016-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/88661 title Amazon Linux AMI : ntp (ALAS-2016-649) NASL family SuSE Local Security Checks NASL id SUSE_SU-2016-1177-1.NASL description ntp was updated to version 4.2.8p6 to fix 12 security issues. Also yast2-ntp-client was updated to match some sntp syntax changes. (bsc#937837) These security issues were fixed : - CVE-2015-8158: Fixed potential infinite loop in ntpq (bsc#962966). - CVE-2015-8138: Zero Origin Timestamp Bypass (bsc#963002). - CVE-2015-7979: Off-path Denial of Service (DoS) attack on authenticated broadcast mode (bsc#962784). - CVE-2015-7978: Stack exhaustion in recursive traversal of restriction list (bsc#963000). - CVE-2015-7977: reslist NULL pointer dereference (bsc#962970). - CVE-2015-7976: ntpq saveconfig command allows dangerous characters in filenames (bsc#962802). - CVE-2015-7975: nextvar() missing length check (bsc#962988). - CVE-2015-7974: Skeleton Key: Missing key check allows impersonation between authenticated peers (bsc#962960). - CVE-2015-7973: Replay attack on authenticated broadcast mode (bsc#962995). - CVE-2015-8140: ntpq vulnerable to replay attacks (bsc#962994). - CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose origin (bsc#962997). - CVE-2015-5300: MITM attacker could have forced ntpd to make a step larger than the panic threshold (bsc#951629). The update package also includes non-security fixes. See advisory for details. 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. last seen 2020-06-01 modified 2020-06-02 plugin id 90821 published 2016-05-02 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/90821 title SUSE SLED12 / SLES12 Security Update : ntp (SUSE-SU-2016:1177-1) NASL family Scientific Linux Local Security Checks NASL id SL_20161103_NTP_ON_SL7_X.NASL description Security Fix(es) : - It was found that the fix for CVE-2014-9750 was incomplete: three issues were found in the value length checks in NTP last seen 2020-03-18 modified 2016-12-15 plugin id 95850 published 2016-12-15 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/95850 title Scientific Linux Security Update : ntp on SL7.x x86_64 (20161103) NASL family Fedora Local Security Checks NASL id FEDORA_2016-34BC10A2C8.NASL description Security fix for CVE-2015-7974, CVE-2015-8138, CVE-2015-7977, CVE-2015-7978, CVE-2015-7979, CVE-2015-8158 ---- Security fix for CVE-2015-7704, CVE-2015-5300, CVE-2015-7692, CVE-2015-7871, CVE-2015-7702, CVE-2015-7691, CVE-2015-7852, CVE-2015-7701 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2016-03-04 plugin id 89510 published 2016-03-04 reporter This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/89510 title Fedora 22 : ntp-4.2.6p5-36.fc22 (2016-34bc10a2c8) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3096-1.NASL description Aanchal Malhotra discovered that NTP incorrectly handled authenticated broadcast mode. A remote attacker could use this issue to perform a replay attack. (CVE-2015-7973) Matt Street discovered that NTP incorrectly verified peer associations of symmetric keys. A remote attacker could use this issue to perform an impersonation attack. (CVE-2015-7974) Jonathan Gardner discovered that the NTP ntpq utility incorrectly handled memory. An attacker could possibly use this issue to cause ntpq to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2015-7975) Jonathan Gardner discovered that the NTP ntpq utility incorrectly handled dangerous characters in filenames. An attacker could possibly use this issue to overwrite arbitrary files. (CVE-2015-7976) Stephen Gray discovered that NTP incorrectly handled large restrict lists. An attacker could use this issue to cause NTP to crash, resulting in a denial of service. (CVE-2015-7977, CVE-2015-7978) Aanchal Malhotra discovered that NTP incorrectly handled authenticated broadcast mode. A remote attacker could use this issue to cause NTP to crash, resulting in a denial of service. (CVE-2015-7979) Jonathan Gardner discovered that NTP incorrectly handled origin timestamp checks. A remote attacker could use this issue to spoof peer servers. (CVE-2015-8138) Jonathan Gardner discovered that the NTP ntpq utility did not properly handle certain incorrect values. An attacker could possibly use this issue to cause ntpq to hang, resulting in a denial of service. (CVE-2015-8158) It was discovered that the NTP cronjob incorrectly cleaned up the statistics directory. A local attacker could possibly use this to escalate privileges. (CVE-2016-0727) Stephen Gray and Matthew Van Gundy discovered that NTP incorrectly validated crypto-NAKs. A remote attacker could possibly use this issue to prevent clients from synchronizing. (CVE-2016-1547) Miroslav Lichvar and Jonathan Gardner discovered that NTP incorrectly handled switching to interleaved symmetric mode. A remote attacker could possibly use this issue to prevent clients from synchronizing. (CVE-2016-1548) Matthew Van Gundy, Stephen Gray and Loganaden Velvindron discovered that NTP incorrectly handled message authentication. A remote attacker could possibly use this issue to recover the message digest key. (CVE-2016-1550) Yihan Lian discovered that NTP incorrectly handled duplicate IPs on unconfig directives. An authenticated remote attacker could possibly use this issue to cause NTP to crash, resulting in a denial of service. (CVE-2016-2516) Yihan Lian discovered that NTP incorrectly handled certail peer associations. A remote attacker could possibly use this issue to cause NTP to crash, resulting in a denial of service. (CVE-2016-2518) Jakub Prokes discovered that NTP incorrectly handled certain spoofed packets. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-4954) Miroslav Lichvar discovered that NTP incorrectly handled certain packets when autokey is enabled. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-4955) Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed broadcast packets. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-4956) In the default installation, attackers would be isolated by the NTP AppArmor profile. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. 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 93896 published 2016-10-06 reporter Ubuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/93896 title Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : ntp vulnerabilities (USN-3096-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2016-578.NASL description ntp was updated to version 4.2.8p6 to fix 12 security issues. Also yast2-ntp-client was updated to match some sntp syntax changes. (bsc#937837) These security issues were fixed : - CVE-2015-8158: Fixed potential infinite loop in ntpq (bsc#962966). - CVE-2015-8138: Zero Origin Timestamp Bypass (bsc#963002). - CVE-2015-7979: Off-path Denial of Service (DoS) attack on authenticated broadcast mode (bsc#962784). - CVE-2015-7978: Stack exhaustion in recursive traversal of restriction list (bsc#963000). - CVE-2015-7977: reslist NULL pointer dereference (bsc#962970). - CVE-2015-7976: ntpq saveconfig command allows dangerous characters in filenames (bsc#962802). - CVE-2015-7975: nextvar() missing length check (bsc#962988). - CVE-2015-7974: Skeleton Key: Missing key check allows impersonation between authenticated peers (bsc#962960). - CVE-2015-7973: Replay attack on authenticated broadcast mode (bsc#962995). - CVE-2015-8140: ntpq vulnerable to replay attacks (bsc#962994). - CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose origin (bsc#962997). - CVE-2015-5300: MITM attacker could have forced ntpd to make a step larger than the panic threshold (bsc#951629). These non-security issues were fixed : - fate#320758 bsc#975981: Enable compile-time support for MS-SNTP (--enable-ntp-signd). This replaces the w32 patches in 4.2.4 that added the authreg directive. - bsc#962318: Call /usr/sbin/sntp with full path to synchronize in start-ntpd. When run as cron job, /usr/sbin/ is not in the path, which caused the synchronization to fail. - bsc#782060: Speedup ntpq. - bsc#916617: Add /var/db/ntp-kod. - bsc#956773: Add ntp-ENOBUFS.patch to limit a warning that might happen quite a lot on loaded systems. - bsc#951559,bsc#975496: Fix the TZ offset output of sntp during DST. - Add ntp-fork.patch and build with threads disabled to allow name resolution even when running chrooted. This update was imported from the SUSE:SLE-12-SP1:Update update project. last seen 2020-06-05 modified 2016-05-13 plugin id 91111 published 2016-05-13 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/91111 title openSUSE Security Update : ntp (openSUSE-2016-578)
Redhat
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Talos
| id | TALOS-2016-0080 |
| last seen | 2019-05-29 |
| published | 2016-01-19 |
| reporter | Talos Intelligence |
| source | http://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0080 |
| title | Network Time Protocol ntpq and ntpdc Infinite Loop Vulnerability |
References
- http://rhn.redhat.com/errata/RHSA-2016-2583.html
- http://support.ntp.org/bin/view/Main/NtpBug2948
- http://www.debian.org/security/2016/dsa-3629
- http://www.securityfocus.com/bid/81814
- http://www.securitytracker.com/id/1034782
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc
- https://security.gentoo.org/glsa/201607-15
- https://security.netapp.com/advisory/ntap-20171031-0001/
- https://www.kb.cert.org/vuls/id/718152