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CVE-2020-1653— Junos OS: Kernel crash (vmcore) or FPC crash due to mbuf leak

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中存在安全漏洞。攻击者可通过发送TCP数据包到路由引擎（RE）利用该漏洞造成存储器缓存泄漏，导致Flex PIC集中器（FPC）崩溃或系统崩溃并重新启动（vmcore）。以下产品及版本受到影响：Juniper Networks Junos OS 17.4版本，

CVSS 7.5 · High EPSS 1.59% · P73
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I. Basic Information for CVE-2020-1653

Vulnerability Information
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Vulnerability Title
Junos OS: Kernel crash (vmcore) or FPC crash due to mbuf leak
Source: CVE Program / CVE List V5
Vulnerability Description
On Juniper Networks Junos OS devices, a stream of TCP packets sent to the Routing Engine (RE) may cause mbuf leak which can lead to Flexible PIC Concentrator (FPC) crash or the system to crash and restart (vmcore). This issue can be trigged by IPv4 or IPv6 and it is caused only by TCP packets. This issue is not related to any specific configuration and it affects Junos OS releases starting from 17.4R1. However, this issue does not affect Junos OS releases prior to 18.2R1 when Nonstop active routing (NSR) is configured [edit routing-options nonstop-routing]. The number of mbufs is platform dependent. The following command provides the number of mbufs counter that are currently in use and maximum number of mbufs that can be allocated on a platform: user@host> show system buffers 2437/3143/5580 mbufs in use (current/cache/total) Once the device runs out of mbufs, the FPC crashes or the vmcore occurs and the device might become inaccessible requiring a manual restart. This issue affects Juniper Networks Junos OS 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R2-S7, 18.2R3-S5; 18.2X75 versions prior to 18.2X75-D41, 18.2X75-D420.12, 18.2X75-D51, 18.2X75-D60, 18.2X75-D34; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S1; 19.1 versions prior to 19.1R1-S5, 19.1R2-S1, 19.1R3; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S3, 19.3R3; 19.4 versions prior to 19.4R1-S2, 19.4R2. Versions of Junos OS prior to 17.4R1 are unaffected by this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特殊元素净化处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 缓冲区错误漏洞
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中存在安全漏洞。攻击者可通过发送TCP数据包到路由引擎（RE）利用该漏洞造成存储器缓存泄漏，导致Flex PIC集中器（FPC）崩溃或系统崩溃并重新启动（vmcore）。以下产品及版本受到影响：Juniper Networks Junos OS 17.4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
Juniper Networks Junos OS unspecified ~ 17.4R1 -

II. Public POCs for CVE-2020-1653

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III. Intelligence Information for CVE-2020-1653

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Vendor Advisories for CVE-2020-1653 (1)

Same Patch Batch · Juniper Networks · 2020-07-17 · 15 CVEs total

CVE-2020-1654 9.8 CRITICAL Junos OS: SRX Series: processing a malformed HTTP message when ICAP redirect service is en
CVE-2020-1647 9.8 CRITICAL Junos OS: SRX Series: Double free vulnerability can lead to DoS or remote code execution d
CVE-2020-1645 8.3 HIGH Junos OS: MX Series: Services card might restart when DNS filtering is enabled
CVE-2020-1649 7.5 HIGH Junos OS: MX Series: PFE crash on MPC7/8/9 upon receipt of small fragments requiring reass
CVE-2020-1650 7.5 HIGH Junos OS: MX Series: Denial of Service vulnerability in MS-PIC component on MS-MIC or MS-M
CVE-2020-1648 7.5 HIGH Junos OS and Junos OS Evolved: RPD crash when processing a specific BGP packet
CVE-2020-1646 7.5 HIGH Junos OS and Junos OS Evolved: RPD crash while processing a specific BGP update informatio
CVE-2020-1644 7.5 HIGH Junos OS and Junos OS Evolved: RPD crash due to specific BGP UPDATE packets
CVE-2020-1640 7.5 HIGH Junos OS: Receipt of certain genuine BGP packets from any BGP Speaker causes RPD to crash.
CVE-2020-1651 6.5 MEDIUM Junos OS: MX Series: PFE on the line card may crash due to memory leak.
CVE-2020-1641 6.5 MEDIUM Junos OS: A race condition on receipt of crafted LLDP packets leads to a memory leak and a
CVE-2020-1652 5.6 MEDIUM Junos Space: OpenNMS is accessible via port 9443
CVE-2020-1643 5.5 MEDIUM Junos OS: EX Series: RPD crash when executing specific "show ospf interface" commands from
CVE-2020-1655 5.3 MEDIUM Junos OS: MX Series: PFE crash on MPC7/8/9 upon receipt of large packets requiring fragmen

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-159

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