Huawei EulerOS: Security Advisory for ntp (EulerOS-SA-2019-1557)

Published: 2020-01-23 12:14:39
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Summary:
The remote host is missing an update for the Huawei EulerOS 'ntp' Linux Distribution Package(s) announced via the EulerOS-SA-2019-1557 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
It was found that ntpd did not check whether a Message Authentication Code (MAC) was present in a received packet when ntpd was configured to use symmetric cryptographic keys. A man-in-the-middle attacker could use this flaw to send crafted packets that would be accepted by a client or a peer without the attacker knowing the symmetric key.(CVE-2015-1798) A missing return statement in the receive() function could potentially allow a remote attacker to bypass NTP's authentication mechanism.(CVE-2014-9296) The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.(CVE-2015-7705) The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.(CVE-2015-7853) Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication.(CVE-2015-7871) The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote attackers to cause a denial of service (disruption) by continually sending a packet with a zero-origin timestamp and source IP address of the ''other side'' of an interleaved association causing the victim ntpd to reset its association.(CVE-2018-7185) The ntpq saveconfig command in NTP 4.1.2, 4.2.x before 4.2.8p6, 4.3, 4.3.25, 4.3.70, and 4.3.77 does not properly filter special characters, which allows attackers to cause unspecified impact via a crafted filename.(CVE-2015-7976) ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to cause a denial of service (infinite loop or crash) by pointing the key file at the log file.(CVE-2015-7850) The decodenetnum function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (assertion failure) via a 6 or mode 7 packet containing a long data value.(CVE-2015-7855)

Affected Versions:
'ntp' Linux Distribution Package(s) on Huawei EulerOS Virtualization 3.0.1.0.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2014-9296
https://nvd.nist.gov/vuln/detail/CVE-2015-1798
https://nvd.nist.gov/vuln/detail/CVE-2015-7705
https://nvd.nist.gov/vuln/detail/CVE-2015-7850
https://nvd.nist.gov/vuln/detail/CVE-2015-7853
https://nvd.nist.gov/vuln/detail/CVE-2015-7855
https://nvd.nist.gov/vuln/detail/CVE-2015-7871
https://nvd.nist.gov/vuln/detail/CVE-2015-7976
https://nvd.nist.gov/vuln/detail/CVE-2018-7185

References:

https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-1557

Severity
High
CVSS Score
7.5
Published
2020-01-23
Modified
2020-01-23
Category
Huawei EulerOS Local Security Checks

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