CVE-2018-8956
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Network Time Protocol（NTP,网络时间协议）是一种以数据包交换把两台电脑的时钟同步化的网络协议。 NTP中的ntpd存在安全漏洞。远程攻击者可利用该漏洞使广播客户端无法与广播NTP服务器同步时钟。以下产品及版本受到影响：NTP 4.2.8p10版本，4.2.8p11版本，4.2.8p12版本，4.2.8p13版本。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1498 · Network Denial of Service
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I. Basic Information for CVE-2018-8956
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The attacker must either be a part of the same broadcast network or control a slave in that broadcast network that can capture certain required packets on the attacker's behalf and send them to the attacker.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Network Time Protocol 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Network Time Protocol（NTP,网络时间协议）是一种以数据包交换把两台电脑的时钟同步化的网络协议。 NTP中的ntpd存在安全漏洞。远程攻击者可利用该漏洞使广播客户端无法与广播NTP服务器同步时钟。以下产品及版本受到影响：NTP 4.2.8p10版本，4.2.8p11版本，4.2.8p12版本，4.2.8p13版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2018-8956
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2018-8956 (1)
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https://security.netapp.com/advisory/ntap-20200518-0006/ x_refsource_CONFIRM
Mailing List Discussions for CVE-2018-8956 (2)
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http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html vendor-advisory x_refsource_SUSE
Other References for CVE-2018-8956 (4)
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https://nikhiltripathi.in/NTP_attack.pdf x_refsource_MISC
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https://arxiv.org/abs/2005.01783 x_refsource_MISC
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https://tools.ietf.org/html/rfc5905 x_refsource_MISC
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http://www.ntp.org/ x_refsource_MISC
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IV. Related Vulnerabilities
V. Comments for CVE-2018-8956
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