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CVE-2021-0215— Junos OS: EX Series, QFX Series, SRX Branch Series, MX Series: Memory leak in packet forwarding engine due to 802.1X authenticator port interface flaps

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。 多款Juniper Networks产品存在资源管理错误漏洞，攻击者可利用该漏洞通过Junos EX QFX SRX的802.1X Authenticator端口接口触发内存泄漏，从而触发拒绝服务。以下产品及型号受到影响：Junos OS EX，Junos OS QFX，Junos OS SRX

CVSS 6.5 · Medium EPSS 0.79% · P55
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I. Basic Information for CVE-2021-0215

Vulnerability Information
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Vulnerability Title
Junos OS: EX Series, QFX Series, SRX Branch Series, MX Series: Memory leak in packet forwarding engine due to 802.1X authenticator port interface flaps
Source: CVE Program / CVE List V5
Vulnerability Description
On Juniper Networks Junos EX series, QFX Series, MX Series and SRX branch series devices, a memory leak occurs every time the 802.1X authenticator port interface flaps which can lead to other processes, such as the pfex process, responsible for packet forwarding, to crash and restart. An administrator can use the following CLI command to monitor the status of memory consumption: user@device> show task memory detail Please refer to https://kb.juniper.net/KB31522 for details. This issue affects Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D54; 15.1X49 versions prior to 15.1X49-D240 ; 15.1X53 versions prior to 15.1X53-D593; 16.1 versions prior to 16.1R7-S8; 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S8; 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-S3; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S2; 19.1 versions prior to 19.1R1-S5, 19.1R2-S2, 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. This issue does not affect Juniper Networks Junos OS 12.3, 15.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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。 多款Juniper Networks产品存在资源管理错误漏洞，攻击者可利用该漏洞通过Junos EX QFX SRX的802.1X Authenticator端口接口触发内存泄漏，从而触发拒绝服务。以下产品及型号受到影响：Junos OS EX，Junos OS QFX，Junos OS SRX
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 12.3 -
Juniper Networks Junos OS 14.1X53 ~ 14.1X53-D54 -
Juniper Networks Junos OS 15.1X49 ~ 15.1X49-D240 -
Juniper Networks Junos OS 15.1X53 ~ 15.1X53-D593 -
Juniper Networks Junos OS 16.1 ~ 16.1R7-S8 -

II. Public POCs for CVE-2021-0215

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III. Intelligence Information for CVE-2021-0215

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Vendor Advisories for CVE-2021-0215 (1)

Same Patch Batch · Juniper Networks · 2021-01-15 · 19 CVEs total

CVE-2021-0211 10.0 CRITICAL Junos OS and Junos OS Evolved: Upon receipt of a specific BGP FlowSpec message network tra
CVE-2021-0208 8.8 HIGH Junos OS and Junos OS Evolved: In bidirectional LSP configurations, on MPLS egress router
CVE-2021-0203 8.6 HIGH Junos OS: EX and QFX5K Series: Storm Control does not work as expected when Redundant Trun
CVE-2021-0204 7.8 HIGH Junos OS: dexp Local Privilege Escalation vulnerabilities in SUID binaries
CVE-2021-0218 7.8 HIGH Junos OS: Command injection vulnerability in license-check daemon
CVE-2021-0223 7.8 HIGH Junos OS: telnetd.real Local Privilege Escalation vulnerabilities in SUID binaries
CVE-2021-0206 7.5 HIGH Junos OS: NFX Series, SRX Series: PFE may crash upon receipt of specific packet when SSL P
CVE-2021-0207 7.5 HIGH NFX250, NFX350, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Se
CVE-2021-0202 7.5 HIGH Junos OS: MX Series, EX9200 Series: Trio-based MPC memory leak when Integrated Routing and
CVE-2021-0217 7.4 HIGH Junos OS: EX Series and QFX Series: Memory leak issue processing specific DHCP packets
CVE-2021-0222 7.4 HIGH Junos OS: Upon receipt of certain protocol packets with invalid payloads a self-propagatin
CVE-2021-0210 6.8 MEDIUM Junos OS: Privilege escalation in J-Web due to arbitrary command and code execution via in
CVE-2021-0220 6.8 MEDIUM Junos Space: Shared secrets stored in recoverable format and directly exposed through the
CVE-2021-0219 6.7 MEDIUM Junos OS: Command injection vulnerability in 'request system software' CLI command
CVE-2021-0209 6.5 MEDIUM Junos OS Evolved: Receipt of certain valid BGP update packets from BGP peers may cause RPD
CVE-2021-0221 6.5 MEDIUM Junos OS: QFX Series: Traffic loop Denial of Service (DoS) upon receipt of specific IP mul
CVE-2021-0205 5.8 MEDIUM Junos OS: MX Series: Dynamic filter fails to match IPv6 prefix
CVE-2021-0212 5.0 MEDIUM Contrail Networking: Administrator credentials are exposed in a plaintext file

IV. Related Vulnerabilities

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

V. Comments for CVE-2021-0215

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