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CVE-2019-0071— Junos OS: EX2300, EX3400 Series: Veriexec signature checking not enforced in specific versions of Junos OS

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 18.1R3-S4版本和18.3R1-S3版本中存在安全漏洞。攻击者可利用该漏洞安装不可信的可执行镜像，提升权限，进而完全控制系统。以下产品及版本受到影响：Juniper Networks EX2300；EX2300-C；EX3400。

CVSS 7.8 · High EPSS 0.18% · P8
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I. Basic Information for CVE-2019-0071

Vulnerability Information
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Vulnerability Title
Junos OS: EX2300, EX3400 Series: Veriexec signature checking not enforced in specific versions of Junos OS
Source: CVE Program / CVE List V5
Vulnerability Description
Veriexec is a kernel-based file integrity subsystem in Junos OS that ensures only authorized binaries are able to be executed. Due to a flaw in specific versions of Junos OS, affecting specific EX Series platforms, the Veriexec subsystem will fail to initialize, in essence disabling file integrity checking. This may allow a locally authenticated user with shell access to install untrusted executable images, and elevate privileges to gain full control of the system. During the installation of an affected version of Junos OS are installed, the following messages will be logged to the console: Initializing Verified Exec: /sbin/veriexec: Undefined symbol "__aeabi_uidiv" /sbin/veriexec: Undefined symbol "__aeabi_uidiv" /sbin/veriexec: Undefined symbol "__aeabi_uidiv" veriexec: /.mount/packages/db/os-kernel-prd-arm-32-20190221.70c2600_builder_stable_11/boot/brcm-hr3.dtb: Authentication error veriexec: /.mount/packages/db/os-kernel-prd-arm-32-20190221.70c2600_builder_stable_11/boot/contents.izo: Authentication error ... This issue affects Juniper Networks Junos OS: 18.1R3-S4 on EX2300, EX2300-C and EX3400; 18.3R1-S3 on EX2300, EX2300-C and EX3400.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
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 18.1R3-S4版本和18.3R1-S3版本中存在安全漏洞。攻击者可利用该漏洞安装不可信的可执行镜像，提升权限，进而完全控制系统。以下产品及版本受到影响：Juniper Networks EX2300；EX2300-C；EX3400。
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 18.1R3-S4 -

II. Public POCs for CVE-2019-0071

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III. Intelligence Information for CVE-2019-0071

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Vendor Advisories for CVE-2019-0071 (2)

Same Patch Batch · Juniper Networks · 2019-10-09 · 25 CVEs total

CVE-2019-0047 8.8 HIGH Junos OS: Persistent XSS vulnerability in J-Web
CVE-2019-0070 8.8 HIGH Junos OS: NFX Series: An Improper Input Validation weakness allows a malicious local attac
CVE-2019-0058 7.8 HIGH Junos OS: SRX Series: A weakness in the Veriexec subsystem may allow privilege escalation.
CVE-2019-0061 7.8 HIGH Junos OS: Insecure management daemon (MGD) configuration may allow local privilege escalat
CVE-2019-0057 7.8 HIGH NFX Series: An attacker may be able to take control of the JDM application and subsequentl
CVE-2019-0060 7.5 HIGH Junos OS: SRX Series: flowd process crash due to processing of specific transit IP packets
CVE-2019-0056 7.5 HIGH Junos OS: MX Series: An MPC10 Denial of Service (DoS) due to OSPF states transitioning to
CVE-2019-0055 7.5 HIGH Junos OS: SRX Series: An attacker may cause flowd to crash by sending certain valid SIP tr
CVE-2019-0050 7.5 HIGH Junos OS: SRX1500: Denial of service due to crash of srxpfe process under heavy traffic co
CVE-2019-0075 7.5 HIGH Junos OS: SRX Series: Denial of Service vulnerability in srxpfe related to PIM
CVE-2019-0066 7.5 HIGH Junos OS: A malformed IPv4 packet received by Junos in an NG-mVPN scenario may cause the r
CVE-2019-0064 7.5 HIGH Junos OS: SRX5000 Series: flowd process crash due to receipt of specific TCP packet
CVE-2019-0062 7.5 HIGH Junos OS: Session fixation vulnerability in J-Web
CVE-2019-0059 7.5 HIGH Junos OS: The routing protocol process (rpd) may crash and generate core files upon receip
CVE-2019-0054 6.8 MEDIUM Junos OS: SRX Series: An attacker may be able to perform Man-in-the-Middle (MitM) attacks
CVE-2019-0073 6.6 MEDIUM Junos OS: PKI key pairs are exported with insecure file permissions
CVE-2019-0068 6.5 MEDIUM Junos OS: SRX Series: Denial of Service vulnerability in flowd due to multicast packets
CVE-2019-0067 6.5 MEDIUM Junos OS: Kernel crash (vmcore) upon receipt of a specific link-local IPv6 packet on devic
CVE-2019-0051 6.5 MEDIUM SRX5000 Series: Denial of Service vulnerability in SSL-Proxy feature.
CVE-2019-0063 6.5 MEDIUM Junos OS: MX Series: jdhcpd crash when receiving a specific crafted DHCP response message

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-347

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