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CVE-2019-0031— Junos OS: jdhcpd daemon memory consumption Denial of Service when receiving specific IPv6 DHCP packets.

Quick assessment

Affected
Juniper Networks Junos OS
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.

Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS 17.4版本和18.1版本中存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。

AI Predicted 5.3 Difficulty: Easy EPSS 1.71% · P76

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2019-0031

Vulnerability Information
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Vulnerability Title
Junos OS: jdhcpd daemon memory consumption Denial of Service when receiving specific IPv6 DHCP packets.
Source: CVE Program / CVE List V5
Vulnerability Description
Specific IPv6 DHCP packets received by the jdhcpd daemon will cause a memory resource consumption issue to occur on a Junos OS device using the jdhcpd daemon configured to respond to IPv6 requests. Once started, memory consumption will eventually impact any IPv4 or IPv6 request serviced by the jdhcpd daemon, thus creating a Denial of Service (DoS) condition to clients requesting and not receiving IP addresses. Additionally, some clients which were previously holding IPv6 addresses will not have their IPv6 Identity Association (IA) address and network tables agreed upon by the jdhcpd daemon after the failover event occurs, which leads to more than one interface, and multiple IP addresses, being denied on the client. Affected releases are Juniper Networks Junos OS: 17.4 versions prior to 17.4R2; 18.1 versions prior to 18.1R2.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS 17.4版本和18.1版本中存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。
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
Juniper Networks Junos OS 17.4 ~ 17.4R2 -

II. Public POCs for CVE-2019-0031

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III. Intelligence Information for CVE-2019-0031

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Vendor Advisories for CVE-2019-0031 (2)

Same Patch Batch · Juniper Networks · 2019-04-10 · 16 CVEs total

CVE-2019-0008 QFX5000 Series, EX4300, EX4600: A stack buffer overflow vulnerability in Packet Forwarding
CVE-2019-0019 BGP packets can trigger rpd crash when BGP tracing is enabled.
CVE-2019-0028 Junos OS: RPD process crashes due to specific BGP peer restarts condition.
CVE-2019-0032 Junos Space Service Now and Service Insight: Organization username and password stored in
CVE-2019-0033 SRX Series: A remote attacker may cause a high CPU Denial of Service to the device when pr
CVE-2019-0035 Junos OS: 'set system ports console insecure' allows root password recovery on OAM volumes
CVE-2019-0036 Junos OS: Firewall filter terms named "internal-1" and "internal-2" being ignored
CVE-2019-0037 Junos OS: jdhcpd crash upon receipt of crafted DHCPv6 solicit message
CVE-2019-0038 SRX Series: Crafted packets destined to fxp0 management interface on SRX340/SRX345 devices
CVE-2019-0039 Junos OS: Login credentials are vulnerable to brute force attacks through the REST API
CVE-2019-0040 Junos OS: Specially crafted packets sent to port 111 on any interface triggers responses f
CVE-2019-0041 Junos OS: EX4300-MP Series: IP transit traffic can reach the control plane via loopback in
CVE-2019-0042 Incorrect messages from Juniper Identity Management Service (JIMS) can trigger Denial of S
CVE-2019-0043 Junos OS: RPD process crashes upon receipt of a specific SNMP packet
CVE-2019-0044 Junos OS: SRX5000 series: Kernel crash (vmcore) upon receipt of a specific packet on fxp0

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-400

V. Comments for CVE-2019-0031

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